Turn the sheet of acrylic over on the heating element every 30 60 seconds in order to avoid damaging it.
Acrylic sheet bender.
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Wear gloves as you do this to avoid burning your hands.
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Use long thin 1 inch or so in width test strips to practice your technique and learn how your particular heat source affects your chosen thickness of plastic.
These benders work with acrylic sheets.
To guard against cracking place the acrylic on a flat sheet of glass in a shop oven not the one in your kitchen at about 180ºf 82ºc for about 1 hour per mm thickness then let them air cool.
Lay the sheet across the heating element and wait three to six minutes for it to soften.
Be sure that the marked line is above the heating element.
You can also use many acrylic bender heaters to heat more bents at the same time.
This will anneal the acrylic and relieve the built up stress.
If the thickness of acrylic sheet is beyond 6mm you can use two heaters heat the top and bottom of the sheet at the same time or you need to cut a slot on the sheet.
To set up your plastic or acrylic sheet to bend simple curves for your miniature and model projects you need to first remove the protective covering from the material you wish to bend.
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Set the sheet of acrylic across the rests on the strip heater and turn it on.
Sheet benders for plastic these benders are compatible with plastics such as acrylic polyethylene polypropylene polycarbonate pvc cpvc abs and kydex.
Acrylic plastic pvc plexiglass.