Polishing Acrylic is rather easy if you have the right technique. There are 2
ways to polish acrylic, using a Buffing Wheel and using a Propane
Torch.
When polishing acrylic with a buffing wheel, you should start by
jointing the edge of the acrylic for a nice smooth finish. If a jointed is not
available use 400 grit sandpaper to accomplish this. Then using a soft wheel
gently polish the edges of the acrylic, do not use too much pressure or you will
“burn” or “melt” the acrylic.
The other method used to polish acrylic or plexiglass is to
flame polish. Again joint the edge of the acrylic or sand it with 400 grit
sandpaper. Then with a propane torch with the tip held about 1/2″ away from the
acrylic melt the acrylic moving quickly so you do not burn the acrylic and leave
a bubbled edge. This takes some technique to accomplish.
You can see more tech tips at working with acrylic



