Etching Pint Glass

[dgilbert]

Does anyone have any suggestions for etching on a pint glass. I think I remember a while ago seeing a pint glass someone etched with a diamond drag bit. The glass was constrained in a fixed jig and the I don't believe a rotation axis was employed. I can't figure out how the programming was done or if this is possible to do. Thanks for any help.

[bleeth]

Create a relief of your glass (this would be 1/2 of it). Create your letters and use shape editor (in Artcam or the equivilent in Aspire) to subtract the relief a tiny bit (like .015) and then machine the relief confined to the vectors.

[knight_toolworks]

the drag bit is expensive. mine was 350.00 it is spring loaded. if you are only doing one you may look for a laser engraver they can do it easily.

[tmerrill]

David,

I think you are looking for Ron Sloan's post here:

http://www.talkshopbot.com/forum/showthread.php?t=13064

Tim

[mikeacg]

WidgetWorks has a drag bit for $179.99: http://www.widgetworksunlimited.com/CNC_Diamond_Drag_Engraving_Bit_p/cnc-dmnd_engrv.htm
Thinking about grabbing one for engraving metal but for most of my other stuff I use my laser engraver. It is fast and easy. Check around by you for small local shops and ask them if they have a rotary attachment.

Mike