Re: [CAD_CAM_EDM_DRO] problems cnc engraving true type fonts

les, check your email....
Erie Patsellis
Shelbyville Design & Signworks
Shelbyville, IL 62565

Visit our website at www.shelbyvilledesign.com

----- Original Message -----
From: "Les Watts" <leswatts@...>
To: <CAD_CAM_EDM_DRO@yahoogroups.com>
Sent: Sunday, June 23, 2002 6:27 PM
Subject: [CAD_CAM_EDM_DRO] problems cnc engraving true type fonts


> I have been collecting freeware true type fonts to use for my sample
> engraved signs.
> I find that many (if not most) create problems with some tool path
> generators because
> they have crossovers.
>
> True type fonts are described by a set of control points that describe
> quadratic
> (second order) curves to create the outlines. It is possible to set these
> control points such that the curve intersects itself. Typical is an
intended
> sharp corner that comes out as a tiny figure 8 type of pattern.
>
> I did find some shareware where I can modify the fonts by moving
> control points such that the outline does not intersect. But it is most
> laborious... it took half an hour to find and correct one particular font
> I have and like. Several characters were flawed.
>
> There must be a better way. Anyone heard of something that can detect
> tiny TTF crossovers and auto correct them? It doesn't seem like rocket
> science; I don't think it would be that hard to program.
>
> I did a search but did not find anything. I think some cad/cam programs
> have this embedded but some (otherwise good) do not.
>
> Anyone heard of such a thing?
>
> Les
> Leslie Watts
> L M Watts Furniture
> Tiger, Georgia USA
> http://www.rabun.net/~leswatts/wattsfurniturewp.html
> engineering page:
> http://www.rabun.net/~leswatts/shop.html
>
>
> Addresses:
> FAQ: http://www.ktmarketing.com/faq.html
> FILES: http://groups.yahoo.com/group/CAD_CAM_EDM_DRO/files/
>
> OFF Topic POSTS: General Machining
> If you wish to post on unlimited OT subjects goto:
aol://5863:126/rec.crafts.metalworking or go thru Google.com to reach it if
you have trouble.
> http://www.metalworking.com/news_servers.html
>
> http://groups.yahoo.com/group/jobshophomeshop I consider this as a
sister site to the CCED group, as many of the same members are there, for OT
subjects, that are not allowed on the CCED list.
>
>
>
> Post messages: CAD_CAM_EDM_DRO@yahoogroups.com
> Subscribe: CAD_CAM_EDM_DRO-subscribe@yahoogroups.com
> Unsubscribe: CAD_CAM_EDM_DRO-unsubscribe@yahoogroups.com
> List owner: CAD_CAM_EDM_DRO-owner@yahoogroups.com, wanliker@...
> Moderator: jmelson@... timg@... [Moderator]
> URL to this group: http://groups.yahoo.com/group/CAD_CAM_EDM_DRO
> bill,
> List Mom
> List Owner
>
>
>
> Your use of Yahoo! Groups is subject to http://docs.yahoo.com/info/terms/
>
>
>