Re: [Emc-users] Screw Mapping

On Friday 21 November 2014 08:14:57 andy pugh did opine And Gene did reply: > On 18 November 2014 12:12, Gene Heskett wrote: > > I see the man page for lincurve has been simplified since I last > > tried to use it for spindle speed corrections on my lathe in 2013. > > Better? > > http://www.linu

Re: [Emc-users] Screw Mapping

Typo: "The maximum number if (x,y) points supported is 16." Should be "number OF (x,y) points". On Fri, Nov 21, 2014, at 08:14 AM, andy pugh wrote: > On 18 November 2014 12:12, Gene Heskett wrote: > > I see the man page for lincurve has been simplified since I last tried to > > use it for spi

Re: [Emc-users] Screw Mapping

On 18 November 2014 12:12, Gene Heskett wrote: > I see the man page for lincurve has been simplified since I last tried to > use it for spindle speed corrections on my lathe in 2013. Better? http://www.linuxcnc.org/docs/html/man/man9/lincurve.9.html -- atp If you can't fix it, you don't own i

Re: [Emc-users] Screw Mapping

On Thursday 20 November 2014 06:47:41 Mark Wendt did opine And Gene did reply: > On Thu, Nov 20, 2014 at 6:38 AM, andy pugh wrote: > > https://docs.google.com/spreadsheets/d/1ovcg0THudgyONfH508BG4_mzOxfuD > > 3Od7SsPfnqxXBg/edit#gid=740055151 > > > > > Whatcha think? Easy enough to do? > > > >

Re: [Emc-users] Screw Mapping

On Thu, Nov 20, 2014 at 8:25 AM, andy pugh wrote: > On 20 November 2014 13:07, Mark Wendt wrote: > > >> Using 16 I get > >> http://ibin.co/1htLwap6mz37 > > > Ah ha! Thanks for that. Appreciate the help Andy! > > Actually, you can do better than that. Because Lincurve doesn't > extrapolate you

Re: [Emc-users] Screw Mapping

On 20 November 2014 13:07, Mark Wendt wrote: >> Using 16 I get >> http://ibin.co/1htLwap6mz37 > Ah ha! Thanks for that. Appreciate the help Andy! Actually, you can do better than that. Because Lincurve doesn't extrapolate you can drop the (0,0) point and add a (7,0) point to make the fit bett

Re: [Emc-users] Screw Mapping

On Thu, Nov 20, 2014 at 7:54 AM, andy pugh wrote: > On 20 November 2014 11:47, Mark Wendt wrote: > > > How would you fit it into 14 points? I seem to come up with quite a few > > more points than 14. > > Using 16 I get > http://ibin.co/1htLwap6mz37 > > (Google sheets can't do XY plots properly)

Re: [Emc-users] Screw Mapping

On 20 November 2014 11:47, Mark Wendt wrote: > How would you fit it into 14 points? I seem to come up with quite a few > more points than 14. Using 16 I get http://ibin.co/1htLwap6mz37 (Google sheets can't do XY plots properly) -- atp If you can't fix it, you don't own it. http://www.ifixit.

Re: [Emc-users] Screw Mapping

On Thu, Nov 20, 2014 at 6:38 AM, andy pugh wrote: > > > https://docs.google.com/spreadsheets/d/1ovcg0THudgyONfH508BG4_mzOxfuD3Od7SsPfnqxXBg/edit#gid=740055151 > > > > Whatcha think? Easy enough to do? > > Looks like you should get a nice fit with 14 points. > > > -- > atp > If you can't fix it,

Re: [Emc-users] Screw Mapping

> https://docs.google.com/spreadsheets/d/1ovcg0THudgyONfH508BG4_mzOxfuD3Od7SsPfnqxXBg/edit#gid=740055151 > > Whatcha think? Easy enough to do? Looks like you should get a nice fit with 14 points. -- atp If you can't fix it, you don't own it. http://www.ifixit.com/Manifesto ---

Re: [Emc-users] Screw Mapping

On Thu, Nov 20, 2014 at 6:20 AM, Dave Caroline wrote: > I did notice this is on a wooden bench, I had a twisted lathe once > upon a time in the 1970s, I went to a local machine reconditioning > company and one of the first questions from the old guy was is it on > wood, he then said its going to

Re: [Emc-users] Screw Mapping

I did notice this is on a wooden bench, I had a twisted lathe once upon a time in the 1970s, I went to a local machine reconditioning company and one of the first questions from the old guy was is it on wood, he then said its going to move are you sure you want to do thisI realised what he was

Re: [Emc-users] Screw Mapping

On Tue, Nov 18, 2014 at 9:12 AM, andy pugh wrote: > On 18 November 2014 14:04, Mark Wendt wrote: > > It varies up and down the entire 55" of length of the Z axis, with small > > islands that vary from the median by the same amount, and with several > > points along the axis at the median table h

Re: [Emc-users] Screw Mapping

On Wed, Nov 19, 2014 at 10:11 AM, wrote: > "or some reference plane that matches what you expect your table to be" > That's the trick, idn't it? ;-) Take a look at the links to the pictures I posted yesterday. Mark --

Re: [Emc-users] Screw Mapping

"or some reference plane that matches what you expect your table to be" --Original Mail-- From: "Mark Wendt" To: "Enhanced Machine Controller (EMC)" Sent: Wed, 19 Nov 2014 09:37:03 -0500 Subject: Re: [Emc-users] Screw Mapping On Wed, Nov 19, 2014 at 9

Re: [Emc-users] Screw Mapping

On Wed, Nov 19, 2014 at 9:29 AM, wrote: > Usually you slide the block with the diamond dresser across the table > against a guide, or some reference plane that matches what you expect your > table to be. On a surface grinder you would hold the dresser on your mag > chuck and move the cross feed a

Re: [Emc-users] Screw Mapping

dresser holders that have built in cross slides. --Original Mail-- From: "Mark Wendt" To: "Enhanced Machine Controller (EMC)" Sent: Wed, 19 Nov 2014 09:23:45 -0500 Subject: Re: [Emc-users] Screw Mapping On Wed, Nov 19, 2014 at 9:11 AM, andy pugh wrote: > On 19 Novem

Re: [Emc-users] Screw Mapping

On Wed, Nov 19, 2014 at 9:11 AM, andy pugh wrote: > On 19 November 2014 14:02, wrote: > > Perhaps a reducer bushing would be needed to adapt the center hole size. > Precise centering wouldn't be a big deal since you'd be dressing the wheel > to profile in-place inherently centering i > > Dressi

Re: [Emc-users] Screw Mapping

On 19 November 2014 14:02, wrote: > Perhaps a reducer bushing would be needed to adapt the center hole size. > Precise centering wouldn't be a big deal since you'd be dressing the wheel to > profile in-place inherently centering i Dressing in-place is likely to be non-trivial with no Y axis. H

Re: [Emc-users] Screw Mapping

troller (EMC)" Sent: Wed, 19 Nov 2014 08:57:53 -0500 Subject: Re: [Emc-users] Screw Mapping On Wed, Nov 19, 2014 at 8:49 AM, wrote: > Smaller dia grinding wheels have higher max RPMs, and it looks from the > machine pics like the saw blades are pretty small diameter so a grinding >

Re: [Emc-users] Screw Mapping

On Wed, Nov 19, 2014 at 8:49 AM, wrote: > Smaller dia grinding wheels have higher max RPMs, and it looks from the > machine pics like the saw blades are pretty small diameter so a grinding > wheel in their place would be similarly small. The necessary wheel is > probably $20 or so. I also think t

Re: [Emc-users] Screw Mapping

On Wed, Nov 19, 2014 at 8:36 AM, Viesturs Lācis wrote: > 2014-11-19 15:17 GMT+02:00 Mark Wendt : > > On Wed, Nov 19, 2014 at 8:12 AM, wrote: > > > >> How about temporarily replacing one of your saw blades with a grinding > >> wheel, dressing it to the correct angle to be flat across the width of

Re: [Emc-users] Screw Mapping

workable, but it's nice to have things as mechanically perfect as possible to start with. --Original Mail-- From: "Viesturs Lācis" To: "Enhanced Machine Controller (EMC)" Sent: Wed, 19 Nov 2014 15:36:28 +0200 Subject: Re: [Emc-users] Screw Mapping 2014-11-19 15:17 GM

Re: [Emc-users] Screw Mapping

ot;Enhanced Machine Controller (EMC)" Sent: Wed, 19 Nov 2014 08:17:31 -0500 Subject: Re: [Emc-users] Screw Mapping On Wed, Nov 19, 2014 at 8:12 AM, wrote: > How about temporarily replacing one of your saw blades with a grinding > wheel, dressing it to the correct angle to be flat across

Re: [Emc-users] Screw Mapping

2014-11-19 15:17 GMT+02:00 Mark Wendt : > On Wed, Nov 19, 2014 at 8:12 AM, wrote: > >> How about temporarily replacing one of your saw blades with a grinding >> wheel, dressing it to the correct angle to be flat across the width of the >> vacuum table and then light grinding passes down the table?

Re: [Emc-users] Screw Mapping

On Wed, Nov 19, 2014 at 8:12 AM, wrote: > How about temporarily replacing one of your saw blades with a grinding > wheel, dressing it to the correct angle to be flat across the width of the > vacuum table and then light grinding passes down the table? Your saw > spindles should be plenty rigid an

Re: [Emc-users] Screw Mapping

the grinding wheel is easy with a diamond dresser. --Original Mail-- From: "Mark Wendt" To: "Enhanced Machine Controller (EMC)" Sent: Wed, 19 Nov 2014 07:25:11 -0500 Subject: Re: [Emc-users] Screw Mapping On Wed, Nov 19, 2014 at 7:20 AM, wrote: > Is there a w

Re: [Emc-users] Screw Mapping

On Wed, Nov 19, 2014 at 7:20 AM, wrote: > Is there a way to clamp a sander or similar to the head for use in > flattening? A solid clamping and a series of light cuts ought to flatten to > match the axis. > Tried that too. The way the cutting head is designed there's no real practical way to a

Re: [Emc-users] Screw Mapping

10 -0500 Subject: Re: [Emc-users] Screw Mapping On Tue, Nov 18, 2014 at 10:32 AM, dave wrote: > > On 11/18/2014 06:45 AM, Mark Wendt wrote: > > Stuart, > > > > I have no tooling plates in use now. ;-) > > > > Mark > > > > > Hi Mark, > >

Re: [Emc-users] Screw Mapping

On Tue, Nov 18, 2014 at 11:36 AM, Stuart Stevenson wrote: > Would it be possible to machine the top of the table (with a large enough > machine tool)? > Okay, let's try this again with links. Sourceforge says my photos are too big to up

Re: [Emc-users] Screw Mapping

On 11/18/2014 08:40 AM, andy pugh wrote: > On 18 November 2014 15:32, dave wrote: >> On another tangent I wonder about using a polynomial (curve fit) but >> with the number of inflections points you have it may be pretty high >> order. Linear interp instead of a continuous function may still be b

Re: [Emc-users] Screw Mapping

On Tue, Nov 18, 2014 at 12:22 PM, alex chiosso wrote: > You're are welcome Mark. > What is on the net seems that never die ! > > Alex > Alex, Isn't that just the truth. ;-) -- Download BIRT iHub F-Type - The Free Enter

Re: [Emc-users] Screw Mapping

You're are welcome Mark. What is on the net seems that never die ! Alex On Tue, Nov 18, 2014 at 6:19 PM, Mark Wendt wrote: > On Tue, Nov 18, 2014 at 12:14 PM, alex chiosso wrote: > > > Hi Mark. > > Why don't you update the YouTube video ? > > I usually try to search with Google first and somet

Re: [Emc-users] Screw Mapping

On Tue, Nov 18, 2014 at 12:14 PM, alex chiosso wrote: > Hi Mark. > Why don't you update the YouTube video ? > I usually try to search with Google first and sometimes I try to search > directly into YouTube to find what I'm searching for. > The Andy and Viesturs hints seems to be the right solutio

Re: [Emc-users] Screw Mapping

Hi Mark. Why don't you update the YouTube video ? I usually try to search with Google first and sometimes I try to search directly into YouTube to find what I'm searching for. The Andy and Viesturs hints seems to be the right solution for your needs. Sometimes the man pages are not clear enough to

Re: [Emc-users] Screw Mapping

I've got better, clearer pictures of the machine at home. I'll post them later this afternoon. On Tue, Nov 18, 2014 at 11:59 AM, Dave Caroline wrote: > and Now I see where the feelers can be placed > > Dave > > On 18/11/2014, Mark Wendt wrote: > > On Tue, Nov 18, 2014 at 11:46 AM, alex chiosso

Re: [Emc-users] Screw Mapping

and Now I see where the feelers can be placed Dave On 18/11/2014, Mark Wendt wrote: > On Tue, Nov 18, 2014 at 11:46 AM, alex chiosso wrote: > >> Hi Mark is this your machine >> ? >> Nice application ! >> >> Alex >> > > > Alex, > > Yes! that's mine.

Re: [Emc-users] Screw Mapping

On Tue, Nov 18, 2014 at 11:46 AM, alex chiosso wrote: > Hi Mark is this your machine > ? > Nice application ! > > Alex > Alex, Yes! that's mine. I'd forgotten I'd put up that lousy video of the machine in operation. ;-) Mark

Re: [Emc-users] Screw Mapping

Hi Mark is this your machine ? Nice application ! Alex On Tue, Nov 18, 2014 at 5:43 PM, Mark Wendt wrote: > On Tue, Nov 18, 2014 at 11:36 AM, Stuart Stevenson > wrote: > > > Would it be possible to machine the top of the table (with a large enough >

Re: [Emc-users] Screw Mapping

On Tue, Nov 18, 2014 at 11:36 AM, Stuart Stevenson wrote: > Would it be possible to machine the top of the table (with a large enough > machine tool)? > Not really. I'd have no way to really machine the table using the cutting head. When I get home this afternoon from work I'll post a couple

Re: [Emc-users] Screw Mapping

On 18 November 2014 15:32, dave wrote: > On another tangent I wonder about using a polynomial (curve fit) but > with the number of inflections points you have it may be pretty high > order. Linear interp instead of a continuous function may still be best. > This is the kind of thing that starts em

Re: [Emc-users] Screw Mapping

Would it be possible to machine the top of the table (with a large enough machine tool)? On Tue, Nov 18, 2014 at 10:29 AM, Mark Wendt wrote: > On Tue, Nov 18, 2014 at 11:12 AM, Dave Caroline < > dave.thearchiv...@gmail.com > > wrote: > > > Expecting to move the saws sideways to correct the error

Re: [Emc-users] Screw Mapping

On Tue, Nov 18, 2014 at 11:12 AM, Dave Caroline wrote: > Expecting to move the saws sideways to correct the error seems wrong > to me (I would be expecting the blades to explode), I would bolt a > dti/s to the moving head and measure and therefore be able to fix the > mechanics. > > Dave Caroline

Re: [Emc-users] Screw Mapping

On Tue, Nov 18, 2014 at 11:04 AM, Chris Radek wrote: > On Tue, Nov 18, 2014 at 09:04:18AM -0500, Mark Wendt wrote: > > > At X1, the table height is .001" lower than X0. X2 is .003" lower > > than X0. X3 is .002 lower. X4 is .001 lower. X5 is .002 lower. > > X6 is .003 lower. X7 is .004 lower

Re: [Emc-users] Screw Mapping

Expecting to move the saws sideways to correct the error seems wrong to me (I would be expecting the blades to explode), I would bolt a dti/s to the moving head and measure and therefore be able to fix the mechanics. Dave Caroline On 18/11/2014, Chris Radek wrote: > On Tue, Nov 18, 2014 at 09:04

Re: [Emc-users] Screw Mapping

On Tue, Nov 18, 2014 at 09:04:18AM -0500, Mark Wendt wrote: > At X1, the table height is .001" lower than X0. X2 is .003" lower > than X0. X3 is .002 lower. X4 is .001 lower. X5 is .002 lower. > X6 is .003 lower. X7 is .004 lower. X8 is .002 lower. X9 is > .001 lower. Not having seen how y

Re: [Emc-users] Screw Mapping

On Tue, Nov 18, 2014 at 10:32 AM, dave wrote: > > On 11/18/2014 06:45 AM, Mark Wendt wrote: > > Stuart, > > > > I have no tooling plates in use now. ;-) > > > > Mark > > > > > Hi Mark, > > I don't know if the site is still active but Les Watts used an > interesting compensation > scheme for his

Re: [Emc-users] Screw Mapping

On 11/18/2014 06:45 AM, Mark Wendt wrote: > Stuart, > > I have no tooling plates in use now. ;-) > > Mark > > Hi Mark, I don't know if the site is still active but Les Watts used an interesting compensation scheme for his router. Something about a cam on a tensioned wire IIRC. Being an old cur

Re: [Emc-users] Screw Mapping

Stuart, I have no tooling plates in use now. ;-) Mark On Tue, Nov 18, 2014 at 9:35 AM, Stuart Stevenson wrote: > It is not possible to place one sub plate under your current tooling > plate(s)? > > On Tue, Nov 18, 2014 at 7:41 AM, Mark Wendt wrote: > > > On Tue, Nov 18, 2014 at 8:29 AM, Stua

Re: [Emc-users] Screw Mapping

On Tue, Nov 18, 2014 at 9:26 AM, Gene Heskett wrote: > On Tuesday 18 November 2014 08:14:54 Mark Wendt did opine > And Gene did reply: > > On Tue, Nov 18, 2014 at 7:42 AM, andy pugh wrote: > > > On 18 November 2014 12:26, Mark Wendt wrote: > > > > Ah, then, I guess it may or may not work for me

Re: [Emc-users] Screw Mapping

On Tuesday 18 November 2014 09:13:59 andy pugh did opine And Gene did reply: > On 18 November 2014 13:48, Gene Heskett wrote: > > The offset module would essentially > > be doing what I just suggested using a sum2 for, but offset may have > > some other features that are desirable too > > The mai

Re: [Emc-users] Screw Mapping

On Tue, Nov 18, 2014 at 9:23 AM, andy pugh wrote: > On 18 November 2014 14:20, Mark Wendt wrote: > > > Oh, one other question. Can the "y" value be negative in the lincurve > setp > > or should that be handled in the offset setp? > > Both X and Y can be any real number. The X values should incr

Re: [Emc-users] Screw Mapping

It is not possible to place one sub plate under your current tooling plate(s)? On Tue, Nov 18, 2014 at 7:41 AM, Mark Wendt wrote: > On Tue, Nov 18, 2014 at 8:29 AM, Stuart Stevenson > wrote: > > > Would it not be easier to install a sub plate and cut the sub plate to > the > > machine motion? >

Re: [Emc-users] Screw Mapping

On Tuesday 18 November 2014 08:14:54 Mark Wendt did opine And Gene did reply: > On Tue, Nov 18, 2014 at 7:42 AM, andy pugh wrote: > > On 18 November 2014 12:26, Mark Wendt wrote: > > > Ah, then, I guess it may or may not work for me. My table is 55" > > > long, > > > > and > > > > > my G Code

Re: [Emc-users] Screw Mapping

On Tue, Nov 18, 2014 at 9:21 AM, andy pugh wrote: > On 18 November 2014 14:15, Mark Wendt wrote: > > > > just to make sure I'm on the right page, should the "setp lincurve.00" > > lines - the x and y -val-nn - should the nn identifiers be identical? > > They should. It ought to be correct now. >

Re: [Emc-users] Screw Mapping

On 18 November 2014 14:20, Mark Wendt wrote: > Oh, one other question. Can the "y" value be negative in the lincurve setp > or should that be handled in the offset setp? Both X and Y can be any real number. The X values should increase with index number however or the result is "undefined" --

Re: [Emc-users] Screw Mapping

On 18 November 2014 14:15, Mark Wendt wrote: > > just to make sure I'm on the right page, should the "setp lincurve.00" > lines - the x and y -val-nn - should the nn identifiers be identical? They should. It ought to be correct now. In theory you could keep multiple HAL files of setp commands on

Re: [Emc-users] Screw Mapping

On Tue, Nov 18, 2014 at 9:12 AM, andy pugh wrote: > On 18 November 2014 14:04, Mark Wendt wrote: > > It varies up and down the entire 55" of length of the Z axis, with small > > islands that vary from the median by the same amount, and with several > > points along the axis at the median table h

Re: [Emc-users] Screw Mapping

On Tue, Nov 18, 2014 at 9:04 AM, andy pugh wrote: > On 18 November 2014 12:42, Mark Wendt wrote: > > Yikes! So, after recompiling lincurve to accept at a minimum 55 plotted > > points, I'd have to add 110 lines of setp? > > I would use Excel / Open Office to create the HAL lines, then paste > t

Re: [Emc-users] Screw Mapping

On 18 November 2014 13:48, Gene Heskett wrote: > The offset module would essentially > be doing what I just suggested using a sum2 for, but offset may have some > other features that are desirable too The main advantage of "offset" is that it knows how to lie to the feedback pin so that you don't

Re: [Emc-users] Screw Mapping

On 18 November 2014 14:04, Mark Wendt wrote: > It varies up and down the entire 55" of length of the Z axis, with small > islands that vary from the median by the same amount, and with several > points along the axis at the median table height. Plot it as a graph (spreadsheet or paper) and see ho

Re: [Emc-users] Screw Mapping

On Tue, Nov 18, 2014 at 8:41 AM, andy pugh wrote: > On 18 November 2014 13:10, Mark Wendt wrote: > > I'm still trying to figure out how, on my machine without a moveable Y > axis > > (in other words, since I have no real Y axis movement - the gantry just > > moves along the X axis and the Z axis

Re: [Emc-users] Screw Mapping

On 18 November 2014 12:42, Mark Wendt wrote: > Yikes! So, after recompiling lincurve to accept at a minimum 55 plotted > points, I'd have to add 110 lines of setp? I would use Excel / Open Office to create the HAL lines, then paste that into a standalone HAL file. In fact, here is a Google spre

Re: [Emc-users] Screw Mapping

On Tue, Nov 18, 2014 at 8:35 AM, andy pugh wrote: > On 18 November 2014 12:56, Mark Wendt wrote: > > Yes, I do need the inch by inch interpolation. The fly rod's action, > > depends heavily on getting the numbers over the length of the rod spot on > > to the cross-sectional dimensions calculate

Re: [Emc-users] Screw Mapping

On Tue, Nov 18, 2014 at 8:32 AM, Viesturs Lācis wrote: > 2014-11-18 15:14 GMT+02:00 Mark Wendt : > > Oops, I used incorrect coding. Should be: > > > > setp x1 v1 > > setp y1 v2 > > > > If my Y doesn't change the length of the X axis, would the "v" number on > > the y line not change, or would it

Re: [Emc-users] Screw Mapping

On Tuesday 18 November 2014 08:10:26 Mark Wendt did opine And Gene did reply: > On Tue, Nov 18, 2014 at 7:42 AM, andy pugh wrote: > > On 18 November 2014 12:26, Mark Wendt wrote: > > > Ah, then, I guess it may or may not work for me. My table is 55" > > > long, > > > > and > > > > > my G Code

Re: [Emc-users] Screw Mapping

On Tue, Nov 18, 2014 at 8:29 AM, Stuart Stevenson wrote: > Would it not be easier to install a sub plate and cut the sub plate to the > machine motion? > Stuart, What do mean by that? Currently, I've got the strip held down by vacuum to the table. Each time I make a rod, I have to cut out a

Re: [Emc-users] Screw Mapping

On 18 November 2014 13:10, Mark Wendt wrote: > I'm still trying to figure out how, on my machine without a moveable Y axis > (in other words, since I have no real Y axis movement - the gantry just > moves along the X axis and the Z axis goes up or down), do I still need to > have a Y coordinate on

Re: [Emc-users] Screw Mapping

On Tue, Nov 18, 2014 at 8:19 AM, Viesturs Lācis wrote: > 2014-11-18 15:05 GMT+02:00 Mark Wendt : > > Yes, it will, but that's assuming that the Z correction for all the > > stations in between those two defined points is the same. The map I made > > of the X axis has very few points along the X

Re: [Emc-users] Screw Mapping

On 18 November 2014 12:56, Mark Wendt wrote: > Yes, I do need the inch by inch interpolation. The fly rod's action, > depends heavily on getting the numbers over the length of the rod spot on > to the cross-sectional dimensions calculated. Little differences at > different points in the taper ca

Re: [Emc-users] Screw Mapping

On Tue, Nov 18, 2014 at 8:13 AM, Gene Heskett wrote: > > > Mark > Setp x0 v0 > setp y0 v0 > > setp x1 3.5 > setp y1 -.003 > > setp x2 7.0 > setp y2 .006 > > setp x3 11.5 > setp y3 .002 > > setp x4 15.0 > setp y4 -0.002 > > etc etc > > Between x0 and x1 it will interpolate that -.003, so at 1" you

Re: [Emc-users] Screw Mapping

2014-11-18 15:14 GMT+02:00 Mark Wendt : > Oops, I used incorrect coding. Should be: > > setp x1 v1 > setp y1 v2 > > If my Y doesn't change the length of the X axis, would the "v" number on > the y line not change, or would it equal the number for the "x" line? > > Sorry I'm being dense this mornin

Re: [Emc-users] Screw Mapping

Would it not be easier to install a sub plate and cut the sub plate to the machine motion? On Tue, Nov 18, 2014 at 7:19 AM, Viesturs Lācis wrote: > 2014-11-18 15:05 GMT+02:00 Mark Wendt : > > Yes, it will, but that's assuming that the Z correction for all the > > stations in between those two de

Re: [Emc-users] Screw Mapping

2014-11-18 15:05 GMT+02:00 Mark Wendt : > Yes, it will, but that's assuming that the Z correction for all the > stations in between those two defined points is the same. The map I made > of the X axis has very few points along the X axis at 1" stations that are > identical. X1 may be .002" high,

Re: [Emc-users] Screw Mapping

On Tue, Nov 18, 2014 at 7:42 AM, andy pugh wrote: > On 18 November 2014 12:26, Mark Wendt wrote: > > Ah, then, I guess it may or may not work for me. My table is 55" long, > and > > my G Code is written for a Z station for every inch of X station. Back > to > > the probekins I guess. > > I thi

Re: [Emc-users] Screw Mapping

On Tuesday 18 November 2014 07:48:14 Mark Wendt did opine And Gene did reply: > On Tue, Nov 18, 2014 at 7:42 AM, andy pugh wrote: > > On 18 November 2014 12:26, Mark Wendt wrote: > > > Ah, then, I guess it may or may not work for me. My table is 55" > > > long, > > > > and > > > > > my G Code

Re: [Emc-users] Screw Mapping

On Tue, Nov 18, 2014 at 7:57 AM, Viesturs Lācis wrote: > 2014-11-18 14:48 GMT+02:00 Mark Wendt : > > Maybe, but the taper of the bamboo strip is defined every inch, and it's > > necessary to define that taper per inch. 16 stations won't cover all the > > necessary stations. > > Mark, it will int

Re: [Emc-users] Screw Mapping

On Tue, Nov 18, 2014 at 7:42 AM, andy pugh wrote: > On 18 November 2014 12:26, Mark Wendt wrote: > > Ah, then, I guess it may or may not work for me. My table is 55" long, > and > > my G Code is written for a Z station for every inch of X station. Back > to > > the probekins I guess. > > I thi

Re: [Emc-users] Screw Mapping

On Tue, Nov 18, 2014 at 7:52 AM, Gene Heskett wrote: > > > > > Yikes! So, after recompiling lincurve to accept at a minimum 55 > > plotted points, I'd have to add 110 lines of setp? > > Yes. But since it does interpolate, wouldn't an every 3.5" correction do > 99% of what you need? Or do you h

Re: [Emc-users] Screw Mapping

2014-11-18 14:48 GMT+02:00 Mark Wendt : > Maybe, but the taper of the bamboo strip is defined every inch, and it's > necessary to define that taper per inch. 16 stations won't cover all the > necessary stations. Mark, it will interpolate Z correction between any 2 defined points, so it will cover

Re: [Emc-users] Screw Mapping

On Tue, Nov 18, 2014 at 7:45 AM, Gene Heskett wrote: > > > > > Ah, then, I guess it may or may not work for me. My table is 55" long, > > and my G Code is written for a Z station for every inch of X station. > > Back to the probekins I guess. > > Reread Andy's comment about editing the 16 and re

Re: [Emc-users] Screw Mapping

On Tuesday 18 November 2014 07:42:25 Mark Wendt did opine And Gene did reply: > On Tue, Nov 18, 2014 at 7:39 AM, andy pugh wrote: > > On 18 November 2014 12:20, Viesturs Lؤپcis > > > > wrote: > > > Thanks, but what I meant - I understand the principle, I do not > > > > understand > > > > > the

Re: [Emc-users] Screw Mapping

On Tue, Nov 18, 2014 at 7:42 AM, andy pugh wrote: > On 18 November 2014 12:26, Mark Wendt wrote: > > Ah, then, I guess it may or may not work for me. My table is 55" long, > and > > my G Code is written for a Z station for every inch of X station. Back > to > > the probekins I guess. > > I thi

Re: [Emc-users] Screw Mapping

On Tuesday 18 November 2014 07:26:34 Mark Wendt did opine And Gene did reply: > On Tue, Nov 18, 2014 at 7:20 AM, andy pugh wrote: > > On 18 November 2014 12:12, Gene Heskett wrote: > > > No mention now > > > of a maximum number of setpoints, IIRC it was 16 previously. > > > Sufficient for me, wit

Re: [Emc-users] Screw Mapping

On Tue, Nov 18, 2014 at 7:39 AM, andy pugh wrote: > On 18 November 2014 12:20, Viesturs Lācis > wrote: > > > Thanks, but what I meant - I understand the principle, I do not > understand > > the manpage on how exactly to provide that data to the lincurve > > component. > > setp x1 v1 > setp y1 v2

Re: [Emc-users] Screw Mapping

On 18 November 2014 12:26, Mark Wendt wrote: > Ah, then, I guess it may or may not work for me. My table is 55" long, and > my G Code is written for a Z station for every inch of X station. Back to > the probekins I guess. I think lincurve will probably work better in your case. Probekins is li

Re: [Emc-users] Screw Mapping

On 18 November 2014 12:20, Viesturs Lācis wrote: > Thanks, but what I meant - I understand the principle, I do not understand > the manpage on how exactly to provide that data to the lincurve > component. setp x1 v1 setp y1 v2 ... (unfortunately) -- atp If you can't fix it, you don't own it.

Re: [Emc-users] Screw Mapping

On Tuesday 18 November 2014 07:22:12 andy pugh did opine And Gene did reply: > On 18 November 2014 12:17, Gene Heskett wrote: > > So Andy, is this the same code, or a simplified and now faster > > version? > > Nothing has changed, but the documentation generator might have. And not for the bette

Re: [Emc-users] Screw Mapping

On Tue, Nov 18, 2014 at 7:20 AM, andy pugh wrote: > On 18 November 2014 12:12, Gene Heskett wrote: > > No mention now > > of a maximum number of setpoints, IIRC it was 16 previously. Sufficient > > for me, with a 12 to 13" table travel, but Marks machine is obviously 3 > or > > 4x longer if he i

Re: [Emc-users] Screw Mapping

On 18 November 2014 12:17, Gene Heskett wrote: > So Andy, is this the same code, or a simplified and now faster version? Nothing has changed, but the documentation generator might have. -- atp If you can't fix it, you don't own it. http://www.ifixit.com/Manifesto --

Re: [Emc-users] Screw Mapping

2014-11-18 14:14 GMT+02:00 andy pugh : > Consider it as a graph of (x, y) points. For every input X it returns > the corresponding Y. Between (x,y) points it interpolates linearly. Thanks, but what I meant - I understand the principle, I do not understand the manpage on how exactly to provide that

Re: [Emc-users] Screw Mapping

On 18 November 2014 12:12, Gene Heskett wrote: > No mention now > of a maximum number of setpoints, IIRC it was 16 previously. Sufficient > for me, with a 12 to 13" table travel, but Marks machine is obviously 3 or > 4x longer if he is to do a correction every inch. http://git.linuxcnc.org/gitweb

Re: [Emc-users] Screw Mapping

On Tuesday 18 November 2014 06:53:47 Mark Wendt did opine And Gene did reply: > On Tue, Nov 18, 2014 at 6:47 AM, Gene Heskett wrote: > > On Tuesday 18 November 2014 05:52:16 Mark Wendt did opine > > > > And Gene did reply: > > > On Tue, Nov 18, 2014 at 5:42 AM, Viesturs Lط¤ظ¾cis > > > > > > > >

Re: [Emc-users] Screw Mapping

On 18 November 2014 11:52, Viesturs Lācis wrote: > Andy, could you, please, explain, how exactly does lincurve work? It does a 1-dimensional lookup and interpolation. Consider it as a graph of (x, y) points. For every input X it returns the corresponding Y. Between (x,y) points it interpolates l

Re: [Emc-users] Screw Mapping

On Tuesday 18 November 2014 06:42:43 andy pugh did opine And Gene did reply: > On 18 November 2014 10:29, Mark Wendt wrote: > > is there any way with screw mapping that I could "adjust" the Z axis > > with screw mapping so as it hits each individual "inch" along the X > > axis? > > You could popu

Re: [Emc-users] Screw Mapping

On Tue, Nov 18, 2014 at 6:47 AM, Gene Heskett wrote: > On Tuesday 18 November 2014 05:52:16 Mark Wendt did opine > And Gene did reply: > > On Tue, Nov 18, 2014 at 5:42 AM, Viesturs Lؤپcis > > > > > > wrote: > > > 2014-11-18 12:29 GMT+02:00 Mark Wendt : > > > > is there any way with screw mapping

Re: [Emc-users] Screw Mapping

2014-11-18 13:42 GMT+02:00 andy pugh : > You could populate a "lincurve" component with the required Z offset > for each X. Then link the lincurve X axis input to the axis position > pin. > Then use an "offset" component on your Z position driven from the > output of the lincurve. > > http://www.li

Re: [Emc-users] Screw Mapping

On Tuesday 18 November 2014 05:52:16 Mark Wendt did opine And Gene did reply: > On Tue, Nov 18, 2014 at 5:42 AM, Viesturs Lؤپcis > > > wrote: > > 2014-11-18 12:29 GMT+02:00 Mark Wendt : > > > is there any way with screw mapping that I could "adjust" the Z > > > axis with screw mapping so as it hi

Re: [Emc-users] Screw Mapping

On Tue, Nov 18, 2014 at 6:42 AM, andy pugh wrote: > On 18 November 2014 10:29, Mark Wendt wrote: > > is there any way with screw mapping that I could "adjust" the Z axis with > > screw mapping so as it hits each individual "inch" along the X axis? > > You could populate a "lincurve" component wi

Re: [Emc-users] Screw Mapping

On 18 November 2014 10:29, Mark Wendt wrote: > is there any way with screw mapping that I could "adjust" the Z axis with > screw mapping so as it hits each individual "inch" along the X axis? You could populate a "lincurve" component with the required Z offset for each X. Then link the lincurve X

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