Something like this will enable me to laser on to round objects, bottles, glasses, pencils, fingers ….

I had to buy the belt, gears and stepper motor

Laying it out

Lasering it out

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To simplify this I made clip on rollers that are held in place with O-rings, I can make any size and thought I’d leave the O-rings on the rollers. There’s enough grip on the rollers as they came off a vinyl cutter.

That was the easy bit, next I need to work out the Axis Y precision=(3.1415926*1000*Work Piece diameter(mm))/Circle pulse

Sorry