Re:success with glass engraving

Thanks for comments,
Responses are mixed below

>Alan KM6VV
>Interesting! What do you use for a cutter?

See below

>Smoke
>Not bad Robert! Now if you'll program the machine to engrave on the
>sides
>of glasses using a fourth axis, add some animal or other scenes, you'll
>have
>something that should really sell as custom engravings!

Yes I have already found that is in demand. I think the hardware cludging together I can handle, the cost of the programs is killing me. That is why I have MaxNC, use Miceografix Draw for CAD and all freeware conversion programs. Let me pose this question "IF" you know the circumference of a straight sided glass and could program the steps to match: could you use the X as the rotator?

>jvicars@...
>What tool did you use?

I used a 1/8 diamond ball on glass.jpg and a 1/16 diamond tear shaped on glass2.jpg

>What feed, speed, depth of cut?

My machine is not set up to give that reading properly, but it is slow, I guess I should try and determine that, I used a Dremel at the lowest RPM setting, the cut depth ended up being 1/64 on the one with scrolls and 1/16 on the text, at first it seemed like it was going to crack for sure, but went right through it.

>What type of glass?

Sorry, don't really know,just snatched it up from a pile. It came from an old Micofishe reader mount.

>How did you fixture (hold) the glass?

I placed some 1/8 high density foam under the glass and clamp down with flat aluminum plates using the P-Nut mounts in my Corian table. I am going to try it without the foam once, I thought it might help to cut down on stressing the glass. It was not what I would call a good machine fixture but there was no movement or slippage. If this gets any paying prospects I will use a back stop and adjustable side clamps.


Original post:

>
> Hello list,
> I wanted to show some pics of my glass engraving experiments.
> http://personal.lig.bellsouth.net/lig/d/c/dccarver/projects/glass.jpg
> http://personal.lig.bellsouth.net/lig/d/c/dccarver/projects/glass2.jpg
> I used a brush with water (with a drop of dish soap)to cool the cut.
> Both pieces are 5" X 7". there are some errors but I think it did
> fairly well.
> Robert
>
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