Re: [Emc-users] Emc-users Digest, Vol 60, Issue 71

On 29 April 2011 00:58, Ralph Stirling wrote: > Is it possible to zero an axis position counter from inside > a G-code program? G10 L2? http://linuxcnc.org/docs/html/gcode_main.html#sub:G10:-Set-Coordinate -- atp "Torque wrenches are for the obedience of fools and the guidance of wise men" -

Re: [Emc-users] Emc-users Digest, Vol 60, Issue 71

Is it possible to zero an axis position counter from inside a G-code program? I don't want to have a full homing sequence for a specialized application (not machining), and just want to zero the position on command. Alternatively, is there a parameter number that stores the current position that

Re: [Emc-users] Vacuum table

http://www.instructables.com/id/Vaccum-Table-for-Mini-CNC-Milling-Machine/step2/Make-the-Vaccum-Table/ and http://www.talkshopbot.com/forum/showthread.php?t=5511 .. old thread but good on making a vacuum table and http://shopbotwiki.com/index.php?title=VacuumMain I found this presentation on h

Re: [Emc-users] Router Cutter v Milling Cutter

Too true Les! Being as we're not all using the same machines it does have a big impact on how stuff 'works'. Jarrett Johnson - Original Message - From: Les Newell Date: Thursday, April 28, 2011 4:21 pm Subject: Re: [Emc-users] Router Cutter v Milling Cutter > It does depend on what yo

Re: [Emc-users] Vacuum table

On Thursday, April 28, 2011 06:32:02 PM Viesturs Lācis did opine: > My apologies, but I think that I do not understand, what do You mean > Language diffs Viesturs, we tend to call some stuff by generic names that are actually brand names for products on this side of the pond. They may have dif

Re: [Emc-users] Router Cutter v Milling Cutter

It does depend on what you are cutting. Most of the work I do on that machine is 12mm and 18mm MDF. Generally I use two passes, one deep and one shallow. If I use two even passes or one full depth pass I tend to get problems with the parts moving as the vacuum bed on that machine isn't particul

Re: [Emc-users] Router Cutter v Milling Cutter

Les, I've run it faster w/ a lighter cut but I found that my best material removal rate vs accuracy was more in the 1/2-3/4" at the 100ipm. I used to use solidcarbide spiral type cutters, as well as compression cutters etc. But I've since gone back to straight cutters where possible [for cutting

Re: [Emc-users] HAL: input-output pin wired to a only input or only output pin

On 28 April 2011 18:12, Javier Ros wrote: > Will this give an error or is it possible?. Probably less typing to do it in Hal and see than to ask the question, to be honest. If it doesn't work it should be fairly easy to write a HAL function to convert IO to I and O pins and vice-versa. I think

Re: [Emc-users] Router Cutter v Milling Cutter

That feed looks a little slow to me. I regularly run 4m/min (160IPM) at 18k RPM with a single flute 1/2" replaceable tip cutter. Admittedly I tend towards shallower DOC, say 10 - 12mm for a full cut. IME, for spiral or PCD cutters to justify their extra cost you need to really work them hard. I

Re: [Emc-users] Vacuum table

Another option if you want to use MDF, is to get it cut, then 'paint' the MDF edges with a half water, half wood glue (thin the glue) and paint it on the MDF edges (wherever the surface is not really flat) and that will fill the voids and keep it from 'leaking'. Most peg board I have seen is NOT M

Re: [Emc-users] Vacuum table

Just as a point of interest, on large commercial wood routers a large (>10 hp) vacuum pump is used to draw the vacuum directly through an MDF spoilbard. From: Viesturs Lācis To: Enhanced Machine Controller (EMC) Sent: Thu, April 28, 2011 4:06:36 PM Subject:

Re: [Emc-users] Vacuum table

http://www.talkshopbot.com/forum/ is shopbot oriented, but it is not exclusively for shopbot users. http://www.shopbottools.com/files/SBDocs/SBG00284051220VacuumHoldDown.pdf The second link is a great PDF on vac hold downs, but their implementation is $$$ mainly because they are using a really hig

Re: [Emc-users] Vacuum table

On 28 April 2011 22:06, Viesturs Lācis wrote: > Ok, thanks for the explanation! > Well, from my readings it seems that MDF is not a good choice, because > it is porous material and needs some additional treatment to have it > hold the vacuum. I think trying to hold the vacuum is a mistake. The t

Re: [Emc-users] Router Cutter v Milling Cutter

On 28 April 2011 21:27, Ian W. Wright wrote: > Have you tried RDG tools - www.rdgtools.co.uk Yes, I know them well. (and Chronos too). However I was limiting myself to vendors I could get things from today, as I am going on holiday for a few weeksm but wanted to get cracking. Also very cheap,

Re: [Emc-users] Vacuum table

Ok, thanks for the explanation! Well, from my readings it seems that MDF is not a good choice, because it is porous material and needs some additional treatment to have it hold the vacuum. I believe that plywood would be better. Viesturs 2011/4/28 BRIAN GLACKIN : > peg board is a perforated MDF s

Re: [Emc-users] Vacuum table

I used just such a beastie for exposing photoresist for circuit boards about 35 years ago. D On Thu, 2011-04-28 at 15:48 -0400, Kyle Kerr wrote: > Have you given any thought to peg board, a frame, and a shop vac? > > On Thu, Apr 28, 2011 at 11:41 AM, R. van Twisk wrote: > > Viesturs, > > >

Re: [Emc-users] Vacuum table

peg board is a perforated MDF sheet. Its typically 0.25 inches thick. Its used to hook hangers on for tools and other items. On Thu, Apr 28, 2011 at 4:10 PM, Viesturs Lācis wrote: > My apologies, but I think that I do not understand, what do You mean > :) What is peg board and shop vac? > I am

Re: [Emc-users] Router Cutter v Milling Cutter

Andy, another thought is that Tracey tools in Torquay - http://www.tracytools.com - sometimes have carbide burrs cheap and always have HSS end mills and slot drills at good prices. Ian -- Wh

Re: [Emc-users] Router Cutter v Milling Cutter

Hi Andy, Have you tried RDG tools - www.rdgtools.co.uk - also there are loads of carbide router bits including spiral flute on Ebay. I get most of my milling cutters and router bits from car boot sales, but then I'm a cheapskate..!! Ian Ian W. Wright Sheffield UK On 28/

Re: [Emc-users] Vacuum table

My apologies, but I think that I do not understand, what do You mean :) What is peg board and shop vac? I am considering any viable solution and in search for options I am now in process of reading a thread in CNCZone about vacuum tables... Viesturs 2011/4/28 Kyle Kerr : > Have you given any thou

Re: [Emc-users] Vacuum table

Have you given any thought to peg board, a frame, and a shop vac? On Thu, Apr 28, 2011 at 11:41 AM, R. van Twisk wrote: > Viesturs, > > I know a number of people on the Mechmate forum do have experiences > in that area including photo's and type of vacuum systems used. > > Ries > On Apr 28, 2011,

Re: [Emc-users] Vacuum table

Have you given any thought to peg board, a frame, and a shop vac? On Thu, Apr 28, 2011 at 11:41 AM, R. van Twisk wrote: > Viesturs, > > I know a number of people on the Mechmate forum do have experiences > in that area including photo's and type of vacuum systems used. > > Ries > On Apr 28, 2011,

Re: [Emc-users] Router Cutter v Milling Cutter

As a comparison I typically route wood at +/-100ipm [80-130 typically] and 1/2" cutter at 1/2"-3/4" DOC. At these speeds a full cut is possible, but you need to be cranking at 18K or so [using a 3hp spindle]. This equates to a 0.011" chip on a bit w/ two cutting edges (100ipm x 2)/18000rpm= 0.

Re: [Emc-users] Router Cutter v Milling Cutter

On Thursday, April 28, 2011 12:51:58 PM BRIAN GLACKIN did opine: > I use solid carbide 2 flute up spiral bits (1/8") in MDF for cutting out > all kinds of stuff. I usually get several ours of continous cutting > out of a bit (1/8" deep passes at 30-50IPM). > So have I, and have broken a couple t

[Emc-users] HAL: input-output pin wired to a only input or only output pin

Hello, I want to connect the output of an AND gate, to the INDEX-ENABLE io pin of my card. I want too, to connect the INDEX-ENABLE io pin of AXIS to one of the inputs of the AND gate. Will this give an error or is it possible?. Thanks, Javier PD: Rationale: I want to reset two encoder counte

Re: [Emc-users] Router Cutter v Milling Cutter

On Thursday, April 28, 2011 12:41:22 PM dave did opine: > On Thu, 2011-04-28 at 11:38 -0400, gene heskett wrote: > > On Thursday, April 28, 2011 10:56:53 AM andy pugh did opine: > > > On 28 April 2011 15:28, gene heskett wrote: > > > > :( I keep forgetting which side of the pond you are on, but i

Re: [Emc-users] Router Cutter v Milling Cutter

> > I've been known to mount an inexpensive router (Hitachi) on the bottom > of my spindle for routing. > > I use a $24 HF long shaft electric die grinder > Whatever you do dust is going to be a problem. > The EDG does not blow motor cooling air at the bit point so the dust just piles up around

Re: [Emc-users] Router Cutter v Milling Cutter

I use solid carbide 2 flute up spiral bits (1/8") in MDF for cutting out all kinds of stuff. I usually get several ours of continous cutting out of a bit (1/8" deep passes at 30-50IPM). Hope that adds a data point. On Thu, Apr 28, 2011 at 11:38 AM, gene heskett wrote: > On Thursday, April 28,

Re: [Emc-users] Router Cutter v Milling Cutter

On Thu, 2011-04-28 at 11:38 -0400, gene heskett wrote: > On Thursday, April 28, 2011 10:56:53 AM andy pugh did opine: > > > On 28 April 2011 15:28, gene heskett wrote: > > > :( I keep forgetting which side of the pond you are on, but is there > > > :not a > > > > > > similar retailer catering to

Re: [Emc-users] EMC2 controlling phase driver

On Thu, 2011-04-28 at 09:33 +0900, Mark Thomas wrote: > A quick question. I have EMC2 controlling 3 different machines through > step/direction drivers I also have an older phase driver which is > connected to a small lathe using TurboCNC I believe I have read that > EMC2 will indeed work with pha

Re: [Emc-users] Vacuum table

Viesturs, I know a number of people on the Mechmate forum do have experiences in that area including photo's and type of vacuum systems used. Ries On Apr 28, 2011, at 10:38 AM, Viesturs Lācis wrote: > Hello, folks! > > Has anyone ever built a vacuum table? I need a solution to hold down > plywo

[Emc-users] Vacuum table

Hello, folks! Has anyone ever built a vacuum table? I need a solution to hold down plywood with vacuum for a router. I have been googling to find something useful, and I would like to ask, if any of list members could share their experience or a good source of information about efficient and cost-

Re: [Emc-users] Router Cutter v Milling Cutter

On Thursday, April 28, 2011 10:56:53 AM andy pugh did opine: > On 28 April 2011 15:28, gene heskett wrote: > > :( I keep forgetting which side of the pond you are on, but is there > > :not a > > > > similar retailer catering to the construction trades there? > > Not at the prices you suggest: >

Re: [Emc-users] Router Cutter v Milling Cutter

http://woodworker.com/140-straight-bit-fleigh-mssu-921-327.asp?search=14%20Router%20Bit&searchmode=2 nothing like this over there? -- dos centavos -- WhatsUp Gold - Download Free Network Management Software The most intu

Re: [Emc-users] Router Cutter v Milling Cutter

On 28 April 2011 15:28, gene heskett wrote: > :( I keep forgetting which side of the pond you are on, but is there not a > similar retailer catering to the construction trades there? Not at the prices you suggest: http://www.cromwell.co.uk/static/publication/990/pages/141.pdf -- atp "Torque wr

Re: [Emc-users] Router Cutter v Milling Cutter

I have talked to someone that does cut MDF all day long. He uses diamond impregnated bits. Yes they cost more, but more than make up for the cost in longevity. for the 68-005 the Onsrud description is: PCD Tipped Straight Flute Cutter Designed for use in abrasive materials where cut quality and

Re: [Emc-users] Router Cutter v Milling Cutter

On Thursday, April 28, 2011 10:26:42 AM andy pugh did opine: > On 28 April 2011 15:08, gene heskett wrote: > > but you can put one of those in hand in an hour or less depending on > > how close the nearest Lowes is. > > About 3000 miles :( I keep forgetting which side of the pond you are on

Re: [Emc-users] Router Cutter v Milling Cutter

On 28 April 2011 15:08, gene heskett wrote: > but you can put one of those in hand in an hour or less depending on > how close the nearest Lowes is. About 3000 miles -- atp "Torque wrenches are for the obedience of fools and the guidance of wise men" --

Re: [Emc-users] Router Cutter v Milling Cutter

On Thursday, April 28, 2011 09:54:59 AM andy pugh did opine: > I hope to machine some MDF on my milling machine this evening. I need > to by a longer tool, and have the choice of a suitable brazed carbide > router cutter or a HSS milling > cutter from different shops at the same price. > > Which

Re: [Emc-users] EMC2 controlling phase driver

On Thursday, April 28, 2011 09:15:11 AM Mark Thomas did opine: > Yes, it's driving convemtional steppers, doubt that it's better but it's > better than scrapping a working box. I have been driving it with > TurboCNC but the old laptop I was using died taking the disk and all my > setup info with i

Re: [Emc-users] Router Cutter v Milling Cutter

I've found carbide spiral cutters to be the best solution though they're more expensive than the brazed variety. From: John Thornton To: Enhanced Machine Controller (EMC) Sent: Thu, April 28, 2011 7:53:59 AM Subject: Re: [Emc-users] Router Cutter v Milling C

Re: [Emc-users] Router Cutter v Milling Cutter

All the wood guys here in the forest use carbide tipped blades or change them often... John Stuart Stevenson wrote: > agreed > > On Thu, Apr 28, 2011 at 7:39 AM, Les Newellwrote: > > >> Hi Andy, >> >> Don't use HSS on MDF. MDF is very abrasive and destroys HSS cutters very >> quickly. Even c

Re: [Emc-users] Router Cutter v Milling Cutter

agreed On Thu, Apr 28, 2011 at 7:39 AM, Les Newell wrote: > Hi Andy, > > Don't use HSS on MDF. MDF is very abrasive and destroys HSS cutters very > quickly. Even carbide wears pretty fast. > > Les > > On 28/04/2011 13:11, andy pugh wrote: > > I hope to machine some MDF on my milling machine this

Re: [Emc-users] Router Cutter v Milling Cutter

Hi Andy, Don't use HSS on MDF. MDF is very abrasive and destroys HSS cutters very quickly. Even carbide wears pretty fast. Les On 28/04/2011 13:11, andy pugh wrote: > I hope to machine some MDF on my milling machine this evening. I need > to by a longer tool, and have the choice of a suitable b

[Emc-users] Router Cutter v Milling Cutter

I hope to machine some MDF on my milling machine this evening. I need to by a longer tool, and have the choice of a suitable brazed carbide router cutter or a HSS milling cutter from different shops at the same price. Which would work best at the inadequate speed that my milling head can manage? S

Re: [Emc-users] EMC2 controlling phase driver

Thanks Lawrence, I know that it has been operating in half-step mode. I've asked the manufacturer to send me a spec sheet to see if I can get to the bottom of which type to use. I seem to remember (it was more than ten years ago) that there were four phases per motor when in half-step mode. Ch

Re: [Emc-users] EMC2 controlling phase driver

On 28 April 2011 01:33, Mark Thomas wrote: >  I believe I have read that EMC2 will indeed work with phase drives but am > having a hard time finding info. Any ideas on where to start? Nice diagrams here: http://www.linuxcnc.org/docview/html/hal_rtcomps.html#sec:Stepgen -- atp "Torque wrenches

Re: [Emc-users] EMC2 controlling phase driver

Yes, it's driving convemtional steppers, doubt that it's better but it's better than scrapping a working box. I have been driving it with TurboCNC but the old laptop I was using died taking the disk and all my setup info with it. All my other machines are conventional step/direction and I have b

Re: [Emc-users] EMC2 controlling phase driver

Definately a good place to start! Cheers, Mark On Wed, 27 Apr 2011 18:09:12 -0700 (PDT) "Peter C. Wallace" wrote: > On Thu, 28 Apr 2011, Mark Thomas wrote: > > > Date: Thu, 28 Apr 2011 09:33:07 +0900 > > From: Mark Thomas > > Reply-To: "Enhanced Machine Controller (EMC)" > > > > To: emc-u

[Emc-users] EMC2 controlling phase driver

I think the OP wants to drive stepper motors using four digital lines for one stepper motor; A, B, C, D phases, much like one would directly drive a LM298. Regards Roland On 28 April 2011 10:06, Ian W. Wright wrote: > Lawrence, > > Is this driving conventional steppers or something > different

Re: [Emc-users] EMC2 controlling phase driver

Lawrence, Is this driving conventional steppers or something different. Is it a better system than microstepping? Ian On 28/04/2011 02:59, Lawrence Glaister wrote: > Hi Mark, > I am not sure what you are referring to by the term phase drive. > I use my mill and lathe with stepgen set to steppin

Re: [Emc-users] M-code into Classic Ladder

Yes, I have done this. Try: script --> hal command --> CL input Sometimes in combination with: PyVCP input --> CL input And you might need the handy script-wait-for here: http://wiki.linuxcnc.org/cgi-bin/emcinfo.pl?CustomMcodesToHal Kim On 04/27/2011 01:51 PM, David Winter wrote: > Dear All, > I