To achieve this core temperature the former must calculate the temperature differential on both sheet surfaces.
Bending acrylic sheet with heat gun temperature.
Fortunately today s technology has produced affordable hand held non contact infrared pyrometers that can be used to determine the sheet surface temperature.
Temperature uniformity varies with heater model.
Sheet compared with about 10 to 12 minutes for air oven heating.
Only that the operator is now forced to move the heat gun constantly along the bend line and flip over the polycarbonate sheet to ensure both sides get heated.
Then aim a heat gun at the point on the acrylic you want to bend.
Ambient oven temperature also affects the heating cycle.
Before you bend acrylic set it between 2 pieces of scrap wood and clamp them together with a vice.
If it doesn t then you re just going to have to be quite diligent.
You can see this in the video below.
To create bends for small scale projects in plexiglass perspex or acrylic 1 8 inch and thinner you can use a small torch butane kitchen torches work well a paint stripping heat gun or an embossing heat tool which is a wand that works very similarly to a paint stripping gun but using a smaller more directed heat flow with a smaller fan.
Using solvent based glues on laser cut extruded acrylic can cause cracking due to the internal stresses from temperature differences in the acrylic.
Bending polycarbonate sheet with a heat gun.
Principally using a heat gun to bend a polycarbonate sheet is the same as hot line bending.
Acrylic sheet heated from one side may vary from one to three minutes depending on the type of heater and the distance from the heating surface to the plexiglas acrylic.
If your heat gun has temperature control set it to between 130 150 c or a low medium setting.
As the acrylic heats up move the heat gun from side to side and steadily push on it with a piece of scrap wood to help it bend.