View Single Post
Old 08-26-2009, 06:33 PM   #23 (permalink)
Bicycle Bob
EcoModding Apprentice
 
Bicycle Bob's Avatar
 
Join Date: May 2008
Location: N. Saskatchewan, CA
Posts: 1,803

Appliance White - '93 Geo Metro 4-Dr. Auto
Last 3: 42.35 mpg (US)

Stealth RV - '91 Chevy Sprint Base
Thanks: 91
Thanked 459 Times in 327 Posts
For casual use, even drywall is rated for vacuum forming temperatures. A bit of metal shielding around the heaters should be all you need. Old stove elements make good heaters - running at 120 V they don't glow. The most important thing is to put a fan inside the oven, with the motor outside, to get even heating. Another neat trick is to use a length of I-beam drapery track extending out the door of a narrow, tall oven. You can use cheap paper clamps and drapery rollers to suspend a sheet or a frame, and then slide it out into position for drawing. The clamp can be hinged from the bottom of the mold.
  Reply With Quote