Re: Cutting perfect circle in acrylic
To clear up ambiguity, do you want a perfectly circular hole in a piece of perspex, or do you want a perfectly circular disc of perspex?
Perspex can me machined, but needs care over speeds and feeds to avoid chipping the edges or shattering everything.
A local machine shop could turn you a disc. If a centre hole is wanted, then things are easier, if not then it's a double-sided tape job. I can do 12 or 13 inches in the gap bed of my lathe. If you want a circular hole, then a router on a trammel is a possibility but revs need to be controlled and feeding has to be very steady. A shallow cut from each side and then a deeper cut etc until the disc breaks out. Tidy up with abrasive paper then rubbing compound and perspex polish.
David
__________________
Can't afford the volcanic island yet, but the plans for my monorail and the goons' uniforms are done
|