Re: [Emc-users] Engraving direction question

2015-07-03 Thread Gene Heskett
On Friday 03 July 2015 20:39:39 Bertho Stultiens wrote: > On 07/04/2015 02:28 AM, Gene Heskett wrote: > If we assume a mill with zero backlash and spindle-speed very > much larger than the feed-rate, would you still care or be > careful about direction? > >>> > >>> Call me a picky ol

Re: [Emc-users] Engraving direction question

2015-07-03 Thread Bertho Stultiens
On 07/04/2015 02:28 AM, Gene Heskett wrote: If we assume a mill with zero backlash and spindle-speed very much larger than the feed-rate, would you still care or be careful about direction? >>> >>> Call me a picky old fart, >> >> I would not dare call you picky. > > Oh? why not?

Re: [Emc-users] Engraving direction question

2015-07-03 Thread Gene Heskett
On Friday 03 July 2015 20:19:09 Bertho Stultiens wrote: > On 07/04/2015 01:48 AM, Gene Heskett wrote: > >> If we assume a mill with zero backlash and spindle-speed very much > >> larger than the feed-rate, would you still care or be careful about > >> direction? > > > > Call me a picky old fart, >

Re: [Emc-users] Engraving direction question

2015-07-03 Thread Bertho Stultiens
On 07/04/2015 01:48 AM, Gene Heskett wrote: >> If we assume a mill with zero backlash and spindle-speed very much >> larger than the feed-rate, would you still care or be careful about >> direction? > > Call me a picky old fart, I would not dare call you picky. The other part I have no comment. ;

Re: [Emc-users] Engraving direction question

2015-07-03 Thread Bertho Stultiens
On 07/04/2015 01:54 AM, Stephen Dubovsky wrote: > If you look at something like Vectric's V-carve Pro it does the faster > no-lift case. I suspect the high-end Aspire tool does the same since they > are based on the same code base. For something like an A they don't even > lift to go back a littl

Re: [Emc-users] Engraving direction question

2015-07-03 Thread Stephen Dubovsky
If you look at something like Vectric's V-carve Pro it does the faster no-lift case. I suspect the high-end Aspire tool does the same since they are based on the same code base. For something like an A they don't even lift to go back a little to get to the cross bar. And its geared towards wood

Re: [Emc-users] Engraving direction question

2015-07-03 Thread Gene Heskett
On Friday 03 July 2015 19:32:08 Bertho Stultiens wrote: > On 07/04/2015 01:06 AM, Gene Heskett wrote: > >> What is the experience of the people here? What would be > >> preferable? A quick (case 1) path or a directionally consistent > >> path (case 2)? > > > > If you see more than a nearly invisi

Re: [Emc-users] Engraving direction question

2015-07-03 Thread Bertho Stultiens
On 07/04/2015 01:06 AM, Gene Heskett wrote: >> What is the experience of the people here? What would be preferable? A >> quick (case 1) path or a directionally consistent path (case 2)? > > If you see more than a nearly invisible artifact using the first method, > then it is time to tweak the bac

Re: [Emc-users] Engraving direction question

2015-07-03 Thread Gene Heskett
On Friday 03 July 2015 17:38:13 Bertho Stultiens wrote: > Hi all, > > While porting the Hershey fonts for engraving it occurred to me that > they are very heavy in pen-up/down movements because many strokes are > partials. There is plenty of room for optimization, reducing the rapid > moves by abou

Re: [Emc-users] Engraving direction question

2015-07-03 Thread andy pugh
On 3 July 2015 at 23:43, Bertho Stultiens wrote: > Well, not really as a flag. The strokes are a the primary part of the > font-definition. It would mean to create an alternative version of the > font face. I was just about to suggest that. Hershey_fast and Hershey_unidirectional maybe? -- atp

Re: [Emc-users] Engraving direction question

2015-07-03 Thread Bertho Stultiens
On 07/04/2015 12:18 AM, Bruce Layne wrote: > Even on a CNC router or a mill, there is a large amount of variation in > the results depending on spindle speed, cutter diameter, grain structure > and other physical properties of the material being engraved, etc. > Secondary operations are also a

Re: [Emc-users] Engraving direction question

2015-07-03 Thread Bruce Layne
Lasers engrave too, and should produce the same results in both of your examples, although much quicker in the first example. Even on a CNC router or a mill, there is a large amount of variation in the results depending on spindle speed, cutter diameter, grain structure and other physical prope

[Emc-users] Engraving direction question

2015-07-03 Thread Bertho Stultiens
Hi all, While porting the Hershey fonts for engraving it occurred to me that they are very heavy in pen-up/down movements because many strokes are partials. There is plenty of room for optimization, reducing the rapid moves by about 30%, but that means that engraving is not done in a consistent di

Re: [Emc-users] More progress

2015-07-03 Thread Gene Heskett
On Friday 03 July 2015 10:07:35 Peter C. Wallace wrote: > On Thu, 2 Jul 2015, Gene Heskett wrote: > > Date: Thu, 2 Jul 2015 23:02:31 -0400 > > From: Gene Heskett > > Reply-To: "Enhanced Machine Controller (EMC)" > > > > To: emc-users@lists.sourceforge.net > > Subject: Re: [Emc-users] More pro

Re: [Emc-users] More progress

2015-07-03 Thread Peter C. Wallace
On Thu, 2 Jul 2015, Gene Heskett wrote: > Date: Thu, 2 Jul 2015 23:02:31 -0400 > From: Gene Heskett > Reply-To: "Enhanced Machine Controller (EMC)" > > To: emc-users@lists.sourceforge.net > Subject: Re: [Emc-users] More progress > SNIP-

[Emc-users] Overcoming Broken URLs [Was: Working Mill]

2015-07-03 Thread Erik Christiansen
On 01.07.15 16:14, Gene Heskett wrote: > The link should then be valid for anyone clicking on it if their email > agent sticks to the rfc's that try to govern how the net works. Firefox does not mind a URL in two parts, broken over two lines. I just highlight the two lines with the mouse, then pas

Re: [Emc-users] More progress

2015-07-03 Thread John Thornton
Don't forget to use the coupons to save even more. July 4-5 JULY4TH15% off this one seems to work all the timeNEWSITE1010% off I buy a lot of stuff from McMaster Carr too and like Albany the fasteners are made in the USA. JT On 7/2/2015 7:24 PM, Bruce Layne wrote: > Thank you