#linuxcnc | Logs for 2019-01-17
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[00:04:30] <Wolf__> maybe, but there wont be much mill after swapping out parts to make that work
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[00:17:47] <SpeedEvil> You can use a vertical mill.
[00:17:59] <ziper> Why not? can't you put the disk in there like any other plain cutter?
[00:17:59] <SpeedEvil> (and cup wheels)
[00:18:35] <SpeedEvil> The shielding tends to have to be rather better for surface grinders, for obvious reasons
[00:19:05] <Wolf__> I doubt the results would come out surface grinder like from screw feed x and dovetails ways
[00:19:21] <SpeedEvil> I think you would probably need to replace the ways at least - and the positioners, and at that point, there isn't a whole lot left.
[00:19:34] <Wolf__> high speed spindle
[00:19:46] <SpeedEvil> It depends what you want. If it's to get a surface mostly flat, once, you can use damn near anything.
[00:20:10] <SpeedEvil> I've seen a very nice surface grinder made using HDPE cutting boards as the ways.
[00:20:26] <SpeedEvil> It was just very, very limited in capability, but fine for what it was wanted for.
[00:20:27] <ziper> whats special about a surface grinder's ways?
[00:20:31] <SpeedEvil> (trimming rough stone tiles)
[00:20:50] <SpeedEvil> Aren't tehy all pressuriesed oil ways, not regular?
[00:20:53] <Wolf__> not much special about the ways, just low friction
[00:21:34] <Wolf__> mine only has one shot oiler
[00:22:49] <Wolf__> https://i.imgur.com https://i.imgur.com
[00:22:55] <SpeedEvil> I've sort of entertained the silly idea of making a surface grinder from a surface plate.
[00:23:32] <SpeedEvil> With just one good axis, and the other roughly supported on air bearings free to move in XY.
[00:24:04] <SpeedEvil> Only useful for making stuff parallel (well, blocks would change that, but...)
[00:25:10] <ziper> one of the machines has the motor mounted underneath, and on the side of the machine is a 5 speed pulley setup driving nothing
[00:25:14] <ziper> any idea what that was for
[00:25:32] <Wolf__> define side of mahcine
[00:25:37] <ziper> picture soon
[00:25:41] <Wolf__> on the table?
[00:26:56] <Wolf__> my surface grinder also has a 3450rpm spindle, doubt a older mill would enjoy that speed for any amount of time
[00:30:47] <SpeedEvil> Just double the wheel size, half the RPM
[00:30:48] <SpeedEvil> :)
[00:31:00] <Wolf__> lol
[00:31:08] <Wolf__> 20” wheels?
[00:31:59] <SpeedEvil> A shaper would almost be the right machine to convert
[00:32:41] <Wolf__> $450, not much converting needed https://i.imgur.com
[00:32:55] <SpeedEvil> Indeed
[00:33:10] <SpeedEvil> Was that $450 with the mag-chuck?
[00:33:23] <Wolf__> $15 for the wall worth of wheels also
[00:33:26] <ziper> https://i.imgur.com
[00:33:30] <Wolf__> yup
[00:33:35] <SpeedEvil> Wolf__: steal.
[00:33:39] <ziper> see the bit above the pneumatic?
[00:34:05] <ziper> I have no need for a surface grider, was just curious
[00:35:46] <Wolf__> weird, not sure what that is for, stuff on the backside right?
[00:36:25] <ziper> just a 4 or 5 speed pulley
[00:37:45] <Wolf__> for power feed or gear hobbing maybe?
[00:39:12] <Wolf__> the K&T #2 horizontal I looked at buying at one point had a feed linked output on the end of the table for doing helical stuff
[00:40:40] <ziper> but with a belt?
[00:41:22] <Wolf__> yeah, usually belt to the dividing head
[00:41:41] <Wolf__> I think
[00:42:20] <Wolf__> hell who knows, could be for some odd options like a slotting head or something also
[00:47:29] <ziper> one of the machines has a little electical box labeled 'cycle start' with a bunch of air lines running out. is that actually capable of running a program with the pneumatic part chuck and feed?
[00:51:13] <Wolf__> maybe? dunno
[00:51:18] <Wolf__> sleep time for me tho
[00:52:36] <ziper> https://i.imgur.com
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[01:15:52] <enleth> have you ever seen an estop-like emergency vent valve on a compressed air system?
[01:17:30] <enleth> not a pressure relief, that's obvious, but an additional system that opens a large diameter valve venting the piping out completely when a big red button gets pressed
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[01:18:11] <fragalot> most pneumatic manufacturers carry those
[01:18:26] <enleth> I'm wondering if it makes sense to include that on a wall panel next to the quick connects
[01:19:33] <enleth> it's not going to be as effective as on a hydraulic system, where depressurising it in an emergency cuts off all power pretty much immediately at every connected device
[01:19:58] <enleth> but if it's located properly, the lag in pressure drop should be unimportant
[01:20:55] <fragalot> in most cases, you'd shut off the pilot line, which opens up a large normally open valve on the actuator lines
[01:22:16] <enleth> I have a big red button for the electrical panel powering the whole room, right next to the door, the fire extinguishers and the first aid kit, so anyone can immediately cut all power except ceiling lights if something goes wrong with a machine or power tool
[01:22:24] <enleth> so it would make sense to do the same thing for the air system
[01:23:51] <enleth> I imagine I really should add in some large diameter piping to vent to the outside as it's going to be unbearably loud if I let it vent in the room
[01:23:59] <fragalot> sure, but remember that cutting power to air systems MIGHT be the last thing you want depending on what's going on
[01:24:05] <enleth> possibly kicking up dust and so on
[01:24:19] <fragalot> if there's any pneumatic clamping devices or vacuum table for example, do you really want those to instantly release & send your part flying?
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[01:25:18] <enleth> fragalot: nothing of the sort right now, and if I do get any holding devices that are air powered, I'll be damn sure to install check valves on them so that they keep holding in case of any air system failures
[01:25:35] <fragalot> :-)
[01:25:49] <fragalot> the valve you're lookig for is a "safety pressure release valve" btw
[01:26:00] <enleth> I know some need a constant flow, like an air-powered vacuum table, but I'm probably going to avoid those anyway, a waste of power IMO
[01:28:19] <enleth> fragalot: google results are hopelessly contaminated with the automatic pressure relief valves
[01:28:46] <fragalot> so search on sites like SMC, Festo, metalworks, etc
[01:29:29] <enleth> in any case, I can just slap a large diameter gas-rated ball valve with a large comfortable handle on there and label it in large clear letters
[01:29:35] <fragalot> the main thing about them is that they have feedback contacts of the actuator position, are normally open, and more expensive.
[01:30:00] <fragalot> a 3-way ball valve would indeed work fine
[01:31:43] <enleth> the remote power control for the compressor sitting in the basement is going to be right there too, but shutting the compressor down in an emergency is really a secondary concern, even if it keeps running for a moment it's not going to be able to build up any sort of pressure with a large valve open to the atmosphere
[01:32:17] <fragalot> compressor side is not an issue with a 3-way valve like the smc VHS series
[01:32:29] <enleth> good point
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[01:38:01] <enleth> I'm also lookin into automatic water removal for the tank, most likely a timer relay triggering an off-delay relay, so that every, say, six hours of actual compressor runtime the water drain valve opens for three seconds
[01:38:25] <fragalot> there is that, or there are float based mechanisms
[01:38:36] <enleth> I have no idea whatsoever as to what those two times should really be
[01:38:52] <enleth> but I imagine they're going to vary with ambient temperature and humidity
[01:38:57] <fragalot> dumb solenoid on a simple programmable timer would work
[01:40:25] <fragalot> or a standard auto drain valve that you'd normally put in-line with the air lines work work on the bottom of the compressor tank
[01:40:32] <fragalot> or at least, I can't think of a reason why it wouldn't
[01:41:18] <enleth> oh, and I'll have to tilt the tank slightly as some dolt installed the drain valve slightly higher than the very bottom
[01:41:42] <fragalot> don't worry about that last tiny bit too much
[01:41:54] <enleth> it's easier to mount the thing at an angle than it is to weld in a new valve and test the tank
[01:42:10] <fragalot> i'm off - good luck. :
[01:42:11] <fragalot> :)
[01:42:14] <enleth> thanks
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[03:08:28] <Wolf__> hey syyl, thought you may appreciate this https://www.homemodelenginemachinist.com tho a bit late lol
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[03:59:46] <Deejay> moin
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[04:10:45] <Deejay> grumblfx
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[04:47:57] <Loetmichel> *gnhihi* coworker is just cutting 150pcs spacer blocks 20mm*12mm*15mm out of 1/2" white POM sheet on the CNC router... Workshop looks like a blizzard went thru ;)
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[05:15:29] <Net|> https://netpipe.ca
[05:20:45] <XXCoder1> Loetmichel: lol HUGE cnc mill at shop looked like it had blizzard inside after cutting so much nylon
[05:25:53] <Loetmichel> XXCoder1: you mean like this just in big? -> http://www.cyrom.org
[05:25:55] <Loetmichel> :-)
[05:26:05] <XXCoder1> yeah
[05:26:13] <XXCoder1> you could fit car inside machine
[05:26:26] <XXCoder1> though have to remove table lol
[05:26:52] <XXCoder1> table would serve as fairly narrow and extra long bed
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[06:37:59] <jthornton> morning
[06:38:08] <Tom_L> morning
[06:38:35] <XXCoder1> morning
[06:58:01] <Deejay> hey there
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[08:01:17] <XXCoder1> making ring out of brass nut and dome nut https://www.youtube.com
[08:01:27] <XXCoder1> end result looks interesting
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[10:29:32] <CNC_Brian> Anyone had any experience of these $2000 Chinese Spindles?
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[10:50:05] <jdh> I have a $400 chinese spindle
[10:51:25] <CNC_Brian> Im only want to use it for hobby user, but how many hours it will last I don't know.
[10:51:44] <CNC_Brian> I suppose its the bearings that will go and can be replaces
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[11:20:41] <Loetmichel> sooo... returned home... now dinner (first thing i eat today), then a bit of sleep (5 hours or so), then a 700km drive, then drop off the goods at the customer and approval, then 700km back home. ;)
[11:21:55] <jthornton> you make sound like a long trip using kilometers lol it's only 435 miles
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[11:27:33] <Loetmichel> jthornton: it is. about 7 hours on the road. two times. with an estimated 5 hour customer approval process in the middle
[11:27:53] <Loetmichel> and i am not really 20 any more ;)
[11:37:33] <JT-Shop2> last time I saw 20 was in 1973...
[11:38:06] <JT-Shop2> you just need to plug in a Kraftwerk cd and drive lol
[11:38:22] <Loetmichel> hihi... could help, yes
[11:39:29] <Loetmichel> i think i'll sleep a bit in the car on the way back when i get tired
[11:39:57] <Loetmichel> i am not used to doing 18 hours shifts any more ;)
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[12:08:42] <jdh> I would not do so.
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[12:21:24] <fragalot> Hi
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[13:01:28] <fragalot> am I in here twice?
[13:01:53] <fragalot_> .. apparently a 2nd instance of irssi started ._.
[13:01:55] <gloops> yes
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[13:02:03] * fragalot shakes fist
[13:03:24] <gloops> hmm think ill get some more cutters from hong kong, less than 2 weeks seems to be the typical delivery time
[13:03:34] <gloops> but china - 6 weeks, strange
[13:13:48] <fragalot> gloops: have you ever looked at a map?
[13:14:06] <gloops> sometimes
[13:14:08] <fragalot> also, this damn welder is NOT selling at all
[13:14:30] <fragalot> 6 people have "bid" on it, but nobody actually wants to take it further than that
[13:16:03] <gloops> on ebay? you can pull it before the last 24 hours, but the last hour is when it all happens, as you know
[13:16:21] <fragalot> no, local site
[13:16:24] <fragalot> the bids mean nothing
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[13:16:57] <CNC_Brian> Anyone recommend some open source or cheap CAM software to create NC code. Trying to use CAMWorks but way too complicated
[13:17:20] <fragalot> fusion360 is cheap & easy, but not open source
[13:17:22] <CNC_Brian> Needs to handle solidworks model
[13:17:54] <CNC_Brian> Yes I was using that on a student license but its expired
[13:18:08] <fragalot> the hobby license can be renewed every year for free
[13:18:17] <CNC_Brian> Really?
[13:18:26] <fragalot> and if you fall within the "I really should be paying for this" category,.. stop cheaping out
[13:18:41] <fragalot> yes - i've been using it for a few years now
[13:19:42] <CNC_Brian> No it really is just hobby use. Like to move into making money, but can't afford any decent equipment
[13:19:55] <fragalot> then it's free
[13:20:41] <CNC_Brian> Is there nothing open source worth looking at?
[13:21:06] <fragalot> probably, i've not really looked recently
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[13:31:42] <gloops> there is freecad
[13:33:06] <gloops> blendercam
[13:34:55] <gloops> heekscnc
[13:50:49] <CNC_Brian> Thanks I will have a look Gloops
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[13:55:47] <gloops> they dont compare to f360
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[14:53:32] <renesis> fusion 360 is crazy good for CAM
[14:54:34] <renesis> i dont like the cad elements, like i hate how the view manipulation UI is setup, but for toolpath generation from models, super easy for how capable it is
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[15:09:36] <CaptHindsight> https://imgur.com why bother with a bandsaw?
[15:13:01] <fragalot> I mean, he's cheating a bit by using multiple layers of paper folded like that
[15:13:03] <fragalot> but... damn.
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[15:44:08] <Net|> https://netpipe.ca
[15:44:17] <Net|> neat way to organise desktops
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[16:07:17] <CaptHindsight> https://3dprint.com
[16:07:53] <CaptHindsight> I want one made of chocolate and in the shape of a shoe
[16:08:23] <SpeedEvil> CaptHindsight: can't do that in the netherlands.
[16:08:32] <SpeedEvil> Printing shoes clogs it up.
[16:08:49] <CaptHindsight> <rimshot?
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[16:09:26] <CaptHindsight> anything interesting going on?
[16:09:58] <tehnull> I'm eating really good pizza
[16:10:29] <CaptHindsight> https://3dprint.com
[16:10:47] <SpeedEvil> iI am eating tollerably good pizza.
[16:10:55] <CaptHindsight> nice chart comparing print cost and time for making sand molds
[16:11:27] <CaptHindsight> had mediocre pizza last night
[16:12:39] <CaptHindsight> no good options around here for pizza after 10pm, unless i drive an hour
[16:13:36] <gloops> i had decent fish and chips
[16:14:00] <tehnull> Keep a chunk of parmesan in the fridge, a cheese grater, and a few pickled peppers
[16:14:10] <tehnull> makes any mediocre pizza into a pretty bangin pie
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[16:14:27] <CaptHindsight> they didn't compare resin coated sand cured by laser or DLP/LCD
[16:16:13] <CaptHindsight> tehnull: I have a fridge full of pizza components
[16:16:24] <CaptHindsight> some just can't be helped
[16:16:41] <tehnull> like home run inn
[16:17:22] <CaptHindsight> the 4 cheese is my favorite by Home Run
[16:17:33] <CaptHindsight> I tend to embellish it
[16:18:24] <CaptHindsight> good fish and chips are an hours drive as well
[16:19:07] <CaptHindsight> good Indian, middle eastern, Thai and Chinese ~20 minutes
[16:19:34] <CaptHindsight> there tons of bland, undercooked food and pizza around here
[16:20:17] <CaptHindsight> french fries are like mashed potato sticks
[16:20:38] <gloops> we'll have tonnes of fish and chips when we ban europeans from our waters
[16:21:01] <CaptHindsight> have they stolen all the fisheys?
[16:21:44] <gloops> yes you can hardly navigate the channel for fear of hitting a foreign trawler
[16:22:13] <gloops> theres nothing left, they even scrape the sea bed
[16:24:06] <CaptHindsight> I didn't know that the UK was starving
[16:25:33] <gloops> fish and chips is luxury dining here now
[16:25:53] <gloops> https://www.ebay.co.uk quality pity there isnt a bigger set
[16:26:13] <CaptHindsight> https://www.bbc.com top story
[16:26:19] <CaptHindsight> crazy drivers
[16:26:42] <gloops> 97 year old with half a bottle of port in him
[16:27:56] <CaptHindsight> is there a faster way of printing sand molds than photopolymer coated sand cured by laser/DLP/LCD?
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[16:35:27] <jthornton> down to 1 item on the bathroom remodel punch list :)
[16:43:42] <gloops> https://www.ebay.co.uk insane value
[16:43:51] <XXCoder1> jthornton: way to go
[16:44:06] <XXCoder1> gloops: not bad!
[16:45:01] <gloops> i wonder why single flute are more expensive than 2 or 4 though
[16:45:20] <JT-Shop> less common
[16:45:23] <XXCoder1> i wonder if symmetry got something to do with it.
[16:45:28] <XXCoder1> ah
[16:45:54] <gloops> they are less common on searches
[16:46:48] <gloops> 50 pence for 2 flute cutter £4 for single flute
[16:47:58] <gloops> those cheap ones i posted are HSS though, assumed they were carbide
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[16:49:11] <XXCoder1> wondering if hss is fine for wood
[16:49:14] <XXCoder1> think so yeah
[16:50:12] <gloops> at those prices youll get a few good cuts, throw it away
[16:50:21] <gloops> not good when it gets hot though
[16:51:40] * JT-Shop finds an 1840 one cent coin in his desk...
[16:52:00] <XXCoder1> did you lose it when it was new? ;)
[16:52:08] <JT-Shop> must have
[16:55:17] <gloops> 1840 - is that worth anything now? i mean over 1 cent
[16:56:00] <JT-Shop> it was worth $5 when Dad bought it who knows when
[16:59:01] <CaptHindsight> $35
[16:59:12] <XXCoder1> just dont try polish it before trying to sell it
[16:59:24] <XXCoder1> its one of biggest rookie coin seller mistake apparently
[16:59:33] <CaptHindsight> this one says even more https://www.usacoinbook.com
[16:59:49] <gloops> i know a lot of like old but not ancient coins had little value when i was a kid - same coins now are worth having, so many thrown away
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[17:01:13] <JT-Shop> CaptHindsight: yea that's the one I have
[17:02:34] <CaptHindsight> hah MELT VALUE: $0.0651
[17:03:05] <JT-Shop> mine is pretty worn on the face side...
[17:03:35] <CaptHindsight> 180 years is a long time
[17:03:54] <XXCoder1> yeah. its still few dollars anyway
[17:04:27] <XXCoder1> unl;ess it gets so abused that you cant tell what coin it was, then its valyue is $.0651 lol
[17:04:53] <gloops> i found a really old coin in a field, didnt know what it was at the time, gave it to a local metal detector enthusiast to research it, never saw it again
[17:05:25] <CaptHindsight> did that once, never again
[17:05:36] <XXCoder1> didnt you get paperwork?
[17:05:40] <CaptHindsight> you find out who your friends are
[17:06:36] <gloops> no it was just a pure luck find, i didnt know anything about old coins or antiques or anything, i knew he was into that stuff so showed him and let him take it lol, that was that
[17:07:27] <CaptHindsight> I found a bunch of Buffalo Nickels on the sidewalk once
[17:08:47] <CaptHindsight> all in those cardboard and plastic wraps they display them in
[17:08:47] <Tom_L> what would a 43 penny be made of if not copper? nickel?
[17:09:11] <gloops> looks like they have some value CaptHindsight
[17:09:26] <gregcnc> they are all steel, except for the 3 or 4 documented copper ones
[17:09:59] <gregcnc> there was a real 43 copper penny just auctioned for 200+kUSD
[17:12:05] <gloops> they all used to look for edward VIII coins, he wasnt king for long so not so many with his head on them
[17:12:08] <Tom_L> was it just that one year?
[17:14:41] <CaptHindsight> Steel Composite Penny (1943)
[17:14:58] <CaptHindsight> https://www.usacoinbook.com
[17:15:42] <CaptHindsight> 1943 D Bronze/Copper only 1 minted
[17:17:08] <CaptHindsight> they used to always say to look out for wooden nickels
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[17:41:16] <Tom_L> CaptHindsight as a kid i always did cause they were worth a soda at the corner drug store
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[17:59:20] <CaptHindsight> you had corner drug stores! :)
[17:59:52] <CaptHindsight> we had a ice cream parlor called "The Buffalo"
[18:00:23] <CaptHindsight> https://www.wbez.org
[18:01:37] <MacGalempsy> I need ice cream
[18:02:02] <CaptHindsight> yeah, don't mention food in here
[18:02:12] <CaptHindsight> everyone starts to get cravings
[18:02:52] <XXCoder1> didnt you know if you menion yummy food you must give reasonable amounts to everyone here?
[18:03:03] <XXCoder1> *the law of
[18:03:37] <CaptHindsight> did you have akid in school that brough enough gum for everyone just to stick it to the teacher?
[18:03:59] <CaptHindsight> "Did you bring enough for everyone?"
[18:06:42] <XXCoder1> we lived at school during weeks. different culture
[18:07:13] <XXCoder1> theres small amount of "day kids" that is bused in but..
[18:07:25] <CaptHindsight> looking back we mostly has assholes for teachers
[18:07:35] <CaptHindsight> a few decent ones in high school
[18:09:41] <CaptHindsight> a lesson Hillary didn't learn, don't come across like a 3rd grade petty tyrant telling you what books to stay away from, like physics, math and engineering
[18:09:54] <XXCoder1> i wish i was born say 10 to 15 years ago and not 40 years ago
[18:10:02] <XXCoder1> deaf school here is LOT better now than back then
[18:10:15] <CaptHindsight> I can imagine
[18:11:15] <XXCoder1> im the odd generation between "teach deaf minium" era and high quality schooling current
[18:11:29] <CaptHindsight> public school for the average child was better pre-70's
[18:11:33] <XXCoder1> mom went to school where teachers hit hands with ruler if she signed
[18:12:05] <XXCoder1> and punishment for repeats is requirement to sit on hands so cant use it
[18:12:12] <CaptHindsight> nice
[18:12:18] <XXCoder1> no, no it was not
[18:12:37] <CaptHindsight> <sarcasm>
[18:12:39] <XXCoder1> unless you mean cheanges to now then yeah, it is very
[18:13:11] <XXCoder1> i can't imange how mom went though from completely no tech to now
[18:13:26] <XXCoder1> she used to have giant tty machine lol
[18:13:38] <XXCoder1> sad grandfather threw it away :( its rare now
[18:13:40] <CaptHindsight> it's pretty well dumbed down now
[18:14:19] <CaptHindsight> I was shocked in the 90's when books on reading comprehension were 50% about inferences
[18:14:35] <CaptHindsight> talk about conditioning children
[18:14:48] <XXCoder1> not sure what inferences is
[18:15:46] <XXCoder1> ah evidence based and reasoning
[18:15:49] <XXCoder1> whats wrong with that?
[18:16:00] <CaptHindsight> they tell you what to infer
[18:16:32] <XXCoder1> if they tell you WHAT to think then its not critical thinking class
[18:16:57] <CaptHindsight> explains why current books and films are so predictable and rehashed
[18:17:14] <XXCoder1> also theres only so many stories to tell
[18:17:29] <XXCoder1> want more stories? expand into space :)
[18:17:35] <XXCoder1> then we have more stories to tell
[18:17:40] <CaptHindsight> plot twists
[18:18:13] <XXCoder1> im currently reading Timeline 191
[18:18:14] <CaptHindsight> it's about conditioning children to react to words and events the way you want them to
[18:18:19] <XXCoder1> amazing books by turtledove
[18:18:33] <XXCoder1> yeah thats opposite of what actual critical thinking is
[18:18:55] <CaptHindsight> here's an example...
[18:19:10] <XXCoder1> know what i prefer? questions that cant be answered, not answers that cannot be questioned. feyman
[18:19:23] <CaptHindsight> https://imgur.com
[18:19:47] <XXCoder1> lol
[18:20:51] <XXCoder1> https://i.imgur.com what i thought also. lol
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[18:27:23] <_unreal_> sup... ok so how do I go about installing linuxcnc to an installed ubuntu system?
[18:28:13] <jthornton> simple you build a real time kernel and install linuxcnc
[18:28:15] <jthornton> http://gnipsel.com
[18:29:08] <_unreal_> thats something I'm a little green on... also the computer I'm looking to install linuxcnc on is an asus tinkerboard running ubuntu
[18:29:28] <jthornton> did you look at the link?
[18:29:54] <jthornton> but no ubuntu instructions
[18:30:06] <jthornton> what is a tinkerboard?
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[18:30:33] <Tom_L> an arm platform
[18:30:42] <rmu> tinkerboard is asus arm board in rpi formfactor
[18:30:50] <rmu> rockchip
[18:30:56] <jthornton> ah well that might be fun lol
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[18:31:12] <rmu> also available with emmc
[18:31:40] <rmu> rt preempt seems to work
[18:32:00] <rmu> hm2_spi doesn't really work, watchdog bites within seconds
[18:32:57] <rmu> somebody in south east asia posted videos to youtube with a tinkerboard running linuxcnc/mesa system
[18:33:55] <jthornton> sounds challenging lol
[18:34:03] <Tom_L> sounds crazy
[18:34:13] <jthornton> that too lol
[18:34:31] <Tom_L> iirc i tried to steer him away from that board
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[18:36:38] <MacGalempsy> dont let the watchdog bite ! WOOF
[18:36:53] <_unreal_> its about 2x the RPI in preformance
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[18:37:18] <rmu> the board is quite performant
[18:37:38] <rmu> esp. with emmc
[18:37:48] <pcw_mesa> I think hm2_spi uses the kernel SPI driver which is liable to be bad for real time
[18:37:55] <_unreal_> I have had no issues with the board its fast like hell
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[18:38:11] <rmu> yes it is using the kernel spi driver, and that uses the hardware spi engine
[18:38:18] <rmu> with dma
[18:38:36] <rmu> and that leads to waiting and preemption in the kernel, which is bad
[18:38:41] <_unreal_> parallel port works just fine. using a usb to pic 18f455... that was custom programmed for doing cnc
[18:39:20] <_unreal_> guy named CNCDUDEZ had this whole setup with lots of free software etc.... years back. now its all on archive.org
[18:39:36] <pcw_mesa> Yeah a polled non DMA driver would be better for SPI
[18:39:39] <_unreal_> but allthe code etc... is there
[18:39:55] <_unreal_> and its USB :)
[18:39:57] <MacGalempsy> anyone interested in some hocked goods?
[18:40:06] <_unreal_> hocked goods?
[18:40:13] <MacGalempsy> one is on a trailer and ready to be delivered :)
[18:40:20] <XXCoder1> someone sold it to mac
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[18:40:24] <rmu> there is a generic bitbang driver in the kernel, in principle it should be possible to configure that onto arbitrary gpios via device tree, but i haven't figured out yet how
[18:40:25] <_unreal_> what is hocked
[18:40:33] <MacGalempsy> slang for sale
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[18:40:45] <MacGalempsy> so I have a sinker EDM and a 20" drill press
[18:40:52] <XXCoder1> where is you mac :P so your offer is in context. also what stuff is lol
[18:41:01] <_unreal_> rmu, are youtalking about using the RPI I/O header as parallel port?
[18:41:04] <MacGalempsy> EDM is 30A 110v
[18:41:12] <XXCoder1> all I know you might be at exactly opposite side of globe from me lol
[18:41:22] <rmu> _unreal_: interfacing with a mesa 7i90 fpga card
[18:41:24] <MacGalempsy> and the drill press is 460v /3ph
[18:41:29] <_unreal_> OH
[18:41:31] <rmu> _unreal_: talking SPI
[18:41:44] <pcw_mesa> Yeah bitbanjg might be better than dealing with the general bustage of SPI hardware/drivers
[18:42:44] <pcw_mesa> Though hm2_rspi seems fine ((my test inst has been running 24/7 since July without issue)
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[18:44:38] <XXCoder1> LOL first moments I think its small machine... then I see guy start it up
[18:44:40] <XXCoder1> https://www.youtube.com
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[18:50:39] <_unreal_> so as I was saying before trying to figure out how to get started as far as building and installing linuxcnc for my asus tinkerboard
[18:50:40] <_unreal_> I'
[18:50:59] <_unreal_> I've looked at the page http://gnipsel.com . but as I said I'm rather green when it comes to building custom kernals etc...
[18:51:08] <_unreal_> not that I cant do it but I just have not done it for like 10 years or so
[18:51:12] <XXCoder1> okay I assume macgalempsy lives at infinity distance away then
[18:52:18] <jthornton> he is in Texas I think
[18:52:45] <jthornton> well my tutorial should give you some hints...
[18:53:45] <XXCoder1> honesly distance is pretty small before savings gets eaten up
[18:54:09] <XXCoder1> and wa state has one of highest fuel cost lol
[18:54:30] <jthornton> what is regular gas up there?
[18:54:41] <jthornton> $1.89 here
[18:54:51] <XXCoder1> errrm $2.50 something?
[18:54:56] <XXCoder1> didnt really pay attention
[18:55:11] <XXCoder1> highest i ever paid was nearly $4 few years ago
[18:56:29] <XXCoder1> best and cheapest right now according to website is $2.61/gal
[18:57:03] <XXCoder1> I will never go to acro they suck
[18:57:20] <jthornton> I can remember filling up my `57 VW with $0.249 a gallon gas
[18:57:23] <rmu> _unreal_: what kind of machine do you have?
[18:57:23] <XXCoder1> costco maintans gas tanks pretty good so never any problem
[18:57:33] <_unreal_> I have the asus tinkerboard
[18:57:50] <_unreal_> trying to figure out how to install linuxcnc onto it. its running ubuntu
[18:57:53] <_unreal_> lubuntu
[18:58:05] <rmu> _unreal_: no i mean the cnc part
[18:58:17] <_unreal_> OH.
[18:58:24] <rmu> _unreal_: you can install linuxcnc and run it in simulation mode
[18:58:26] <_unreal_> I'm biulding it still slowly
[18:58:29] <_unreal_> work has been really busy
[18:58:47] <_unreal_> the machine will be a moving gantry mill
[18:58:52] <_unreal_> very very heavy duty
[18:59:19] <_unreal_> #@Q$%^#$%&^# phone again
[18:59:20] <rmu> _unreal_: generating signals for steppers from a rt-preempt-kernel will give a useful setup
[18:59:35] <rmu> will NOT give a useful setup
[19:00:09] <jthornton> steppers on a heavy duty gantry mill is an oxymoron
[19:02:02] <_unreal_> I have heavy duty steppers
[19:02:29] <_unreal_> :) I believe all 4 motors are like 8 lbs
[19:03:01] <Tom_L> nice boat anchors
[19:03:08] <jthornton> lol
[19:03:11] <_unreal_> :p
[19:03:30] <_unreal_> ! how did you know I work on boarts
[19:03:47] <Tom_L> you may possibly have mentioned it
[19:03:50] <Tom_L> just mabye
[19:04:12] <_unreal_> just finished doing a few more upgrades to my sailboat :)
[19:04:36] <_unreal_> https://drive.google.com
[19:04:46] <_unreal_> https://drive.google.com
[19:04:56] <_unreal_> https://drive.google.com
[19:04:57] <XXCoder1> _unreal_: this upgrade? https://aacfpull1-theturtleroom.netdna-ssl.com
[19:04:58] <rmu> _unreal_: you could probably make them work with something like powerstep01 drivers
[19:05:31] <rmu> either way, some amount of coding and tinkering ;) will be involved
[19:06:39] <_unreal_> looks like great GAS knots
[19:08:04] <_unreal_> you know nautical mile HA... haa.... ha....... GAS milage
[19:09:03] <_unreal_> so OMG.... every one tried to bypass ME and contact my daughter directly for her birthday
[19:10:48] <_unreal_> her phone... my daughter is 10
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[19:51:46] <Jymmm> _unreal_: get the hint, they don't want to talk to YOU for HER bday =)
[20:01:05] <_unreal_> I'm back sorry my mother called.
[20:01:22] <_unreal_> had to get the low down on my daughters visit
[20:02:09] <_unreal_> Jymmm, lol way ahead of you.... I was flat out told by my own mother "we are here to see your daughter"
[20:02:26] <_unreal_> last spring... I was like :( ] thanks.... thanks a lot
[20:02:54] <_unreal_> hum more like :( ]........
[20:03:04] <_unreal_> drop jaw
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[20:04:03] <_unreal_> ok so as far as trying to get linux cnc setup on this tinkerboard..... what do I really need to do first?
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[20:13:32] <_unreal_> ?
[20:15:07] <norias> .
[20:16:20] <_unreal_> ..
[20:16:48] <norias> oh.
[20:17:07] <_unreal_> oh my...
[20:17:22] <Tom_L> step 1: install linux
[20:17:28] <_unreal_> compleated
[20:17:33] <_unreal_> completed
[20:17:43] <Tom_L> step2: make sure it's rtai or preempt-rt
[20:18:13] <norias> step3: do stuff
[20:18:17] <norias> step4: profit
[20:18:48] <_unreal_> TinkerBoard-Lubuntu18.04LTS_ELAR-Systems-SD-v2.img
[20:19:09] <_unreal_> trai or preempt
[20:19:10] <_unreal_> ?
[20:19:18] <_unreal_> I dont know those terms directly
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[20:19:40] <Tom_L> it's the realtime component you need to run linuxcnc
[20:20:26] <_unreal_> what would be my best way of finding out if I have preempt or rtai
[20:21:02] <Tom_L> you probably don't have either
[20:21:28] <Tom_L> unless you specifically installed linux with it
[20:22:31] <Tom_L> https://tinkerboarding.co.uk
[20:22:48] <Tom_L> https://forum.linuxcnc.org
[20:24:52] <Tom_L> http://forum.cncprovn.com
[20:24:54] <Tom_L> http://forum.cncprovn.com
[20:25:01] <Tom_L> you'll have to translate those pages
[20:25:06] <norias> real time can be terrible for anything that doesn't need real time
[20:25:10] <_unreal_> its pre built
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[21:21:48] <CaptHindsight> I heard they are working on getting the Rpi3 is QEMU
[21:21:57] <CaptHindsight> is/in
[21:23:01] <CaptHindsight> if they build it right then it will be easy to make kernels and Linux builds for them
[21:23:22] <CaptHindsight> not the shit from fedora or ubuntu
[21:23:36] <CaptHindsight> https://azeria-labs.com
[21:25:00] <CaptHindsight> " there is currently no emulation of the BCM2835 USB controller, so there is no USB support and also, more critically, no networking support. Furthermore, the raspi3 model only works for 64-bit linux kernels, and the Raspbian kernel is 32-bit."
[21:25:19] <CaptHindsight> Date: 2018-10-12
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[21:42:25] <CaptHindsight> oh yeah, that's right, it's Broadcom and not open source
[21:48:56] <CaptHindsight> https://en.wikipedia.org
[21:49:08] <CaptHindsight> GPU 600 MHz Mali-T760 MP4 GPU
[21:50:12] <CaptHindsight> https://developer.arm.com
[21:51:42] <CaptHindsight> https://wiki.debian.org
[21:53:39] <CaptHindsight> so unless you can live with the kernel they build the binary only drivers you are SOL for accelerated graphics
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[21:58:53] <CaptHindsight> http://linux-sunxi.org
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