In the image above the values are all in inches but the principle often holds even if the units are in mm.
Bend radius acrylic sheet.
Acrylic sheet for better energy efficiency.
The rest of the sheet is heated largely by conduction.
The freight on a 1 2 x 48 x 96 sheet of clear acrylic is 0 0.
Cold forming is possible.
Ideal for perspex acrylic plexiglass polycarbonate.
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.
Before you bend acrylic set it between 2 pieces of scrap wood and clamp them together with a vice.
Once you go past a 48 x 96 sheet costs can skyrocket.
Since plexiglas acrylic sheet is an excellent insulator the surface.
Mark your plexiglas sheet along the line where you want to bend it.
Line bending or thermoforming a brasion resistant acrylic sheet is not recommended.
Please keep in mind the bigger and thicker the part is the more it cost to bend.
To calculate the minimum bend radius of curvature multiply the thickness of the sheet to be used by 330.
This radius is applied in all cold bending procedures.
The freight for 1 2 x 48 x 96 sheet of gray acrylic is 90 00 sometimes there is a 65 00 pallet charge.
Then aim a heat gun at the point on the acrylic you want to bend.
Screw the boards together through the second board straight into the base board placing a screw every 6 inches.
Never heat acrylic sheet in a kitchen oven.
Bending shaping plastic with hot air gun heat gun.
Ensure good ventilation because heated acrylic creates mildly toxic fumes.
Tighter radii may result in crazing or cracking of the coating.
This is the completed form you will use to bend your acrylic sheet.
The recommended radius of curvature should be a value greater than 180 times the thickness of the sheet for plexiglas g sheet and 300 times the thickness for plexiglas mc sheet see table below.
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.
Cold forming plexiglas sheet can be cold formed bent at room temperature in a smooth arc and held to a radius by forcing the material into a curved channel support.
Tutorial for how to.
Since plexiglas acrylic sheet is opaque to most wavelengths in the infrared spectrum the surface exposed to the heater absorbs almost all the energy.
Preparing hot air gun w.
