Have you ever used plastic sheet in a project before? It looks really cool, but it can be a pain to make look perfect. This guide will show the basics of polishing plastic using fire. It will create a polished edge that will catch the light in a very brilliant way. All of the tools used in this guide are available at TechShop.
What you will need:
Plastic (I used acrylic) Special Note : Do NOT try to flame polish polycarbonate, it will bubble and will be ruined
An orbital Sander
At least 100 grit sandpaper, I reccomend going up 300
a propane torch (this can be picked up at your local hardware store)
some form of tape that can be used for masking.
Step 1: Preparing your plastic
This scrap piece of plastic has no protective film on it. It is important to keep your plastic protected as often as possible to avoid scratches. I used blue painters tape to re-mask the unprotected areas to avoid scratching in the future steps
Step 2: Sanding
Using an orbital sander, gently remove disfiguring marks from your plastic. Make sure to keep your sanding wheel at a 90 degree angle the entire time to avoid rounding out the corners of your sheet. Rounding out the corners and edges of your sheet will cause distortions on your plastic.
Step 3: Prep for FIRE
Remove the film on your plastic or any masking you have applied. If these are not removed, they will burn and adhere onto your sheet ruining it. Carefully wipe down the areas which you are about to flame polish with a micro fiber cloth to remove any debris. Clean plastic is happy plastic!