eric h fired this volley in
:

Modern acrylics have almost the same durability as polycarbonate
(lexan), so, unless you're going to be torturing this, I'd go with the
acrylic.

Flame polishing works, but you may have to practice to get it right.

Another option is to sand with grades of emery paper, then do a final
polish with jeweler's rouge. You can get small quantites of that in a
liquid suspension by buying the liquid CD polishing medium.


This is _almost_ a silly conversation, except that it's not commonly
known that contact lenses and eyeglasses are turned from cast resin on
lathes.

It doesn't 'come out' clear. It's ground with successively finer
abrasives with mechanized laps... just like any other form of mechanical
lense polishing.

I used to grind telescope mirrors by hand. They don't 'come out' clear,
either... the initial curve is ground with abrasives so coarse you can't
even see through the glass afterwards. Then finer, then finer, and over
again with at least five grades before doing the 'rough' polishing with
something aggressive like Barnesite, followed by 'fine' polishing with
washed rouge.

You can cut any piece of plastic you can successfully cut, and eventually
get it back to clear that way... but it takes a LOT of labor and time.

LLoyd