Here is an Irish coffee design for a glass mug.
I can swear its taste is better when you create it 
Luminarc mug Ameno, ref 0883314709537 powder color coated glass
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Wow! That came out really nice!! What type of rotary do you have?
Hi. Mine is the chuck one. The same you can see in Lightburn pics. The glass is gently held using rubber to avoid slip, and calculations properly made to avoid the mug handle.
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