The minimum bend radius data shown in these charts is measured to the inside of the bend.
Minimum bend radius plastic sheet.
Bend radii minimum bend sizes.
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.
Cold bending tuffak gp polycarbonate sheets may be cold bent with the minimum radius based upon the sheet thickness.
Line bending or thermoforming a brasion resistant acrylic sheet is not recommended.
Generally this height is not suitable for selecting a higher size.
To calculate the minimum bend radius of curvature multiply the thickness of the sheet to be used by 330.
But for harder materials e g.
Minimum cold forming radius sheet thickness x 100.
As a guideline the material can be radiused to 100 times the thickness.
Unfortunately sheet metal bending is not always going to be the same in every shop.
The bend allowance is defined as the material you will add to the actual leg lengths of the part in order to develop a flat pattern.
In steel between 0 5 and 0 8 in.
For this reason strip heat bending is recommended on all gauges 118.
Use this document to choose values that are both manufacturable and meet your needs.
The bend radii listed are standard minimum if manufacturing for aircraft and aerospace applications.
The leg lengths are the part of the flange which is outside of the bend radius.
Thick grade 350 and 400 may have a minimum bend radius of 2 5 times the material thickness when transverse bending while longitudinal bending may require a minimum bend radius that s 3 75 times the material thickness.
Since commercial sheet metal bending can be done with less concern for stresses caused during forming operation the radius can be near zero for thin sheet metal.
Crca inside bend radius equal to 0 65 times of sheet thickness is also enough.
Tighter radii may result in crazing or cracking of the coating.
This radius is applied in all cold bending procedures.
It is given by multiplying the thickness of the sheet by 100 i e.
It is most economical to use a single bend radius throughout the design but if necessary you can utilize multiple radii.
Cold forming is possible.
Minimum inside bend radius for sheet metal recommended inside bend radius for sheet metal parts should be equal to material thickness.
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.
Never heat acrylic sheet in a kitchen oven.
