> I am looking for a heat gun or some sort of device to bend plexiglass.
> I have never done this before, and would like to learn. I could also
> use some plexi scraps to practice on. Any advice would also be greatly
> appriciated. Please reply via email, I am not on this newsgroup often.
> - "You don't get burned out from going too fast. You get burned out
> from going too slow and getting bored."
> - Cliff Burton
First I would suggest checking out a plastics text book like Industrial
Plastics or Exploring the World of Plastics. Then before investing in an
expensive heat gun, try an oven, toaster or hair drier. The type of heat
source depends what type of bend you want to make and the width and
thickness of the material.
If you want to make a large radius bend, or if the material is narrow
than an oven or hair drier will get you started. Heat the plastic
evenally until it softens usually 300-350 degrees F.. Then bend it into
the desired shape. Usually a wooden form is needed to hold the part
while it is cooling. Once the part is cooled it will hold its new shape.
For wider parts a heat strip is normally used. These can be purchased
from a plastics supply house or made from nichrome wire and a variac.
The plastic sheet is placed over the heat strip where you want the sheet
to be bent. When the bend line becomes softened the sheet is bent into
the desired position. the part is removed from the heat strip and held
at the proper angle until the part cools.
Care must be taken when working with plastics in this manner. The heated
plastic can cause severe burns if not handled with proper gloves. The
fumes given off while heating plastics can be toxic. Proper ventilation
should be used.
If you can't find any scraps to play with locally I'd be glad to sell
you some. I also have nichrome wire and some used heat guns.