Why Cooling Determines the Final Bend Angle

A thermoplastic bend can move while it is still warm. Holding the part at the correct angle until it becomes stable reduces spring-back and angle variation.

1.Why it matters

Cooling should be even and supported. Releasing one side early can twist a long part, while aggressive local cooling may introduce stress. Measure the finished angle after the part reaches a consistent condition.

2.Practical checklist

· Use a clean jig, mold or angle stop.

· Support long pieces along their full length.

· Define a standard release and inspection point.

3.Which machine fits?

The Factory Bender's molds support repeat cooling positions. Advertising work can use dedicated jigs for common boxes, holders and display shapes.

Frequently asked question

Should the part be measured while hot?

Use hot checks only for process observation. Final acceptance should be based on a cooled, stable part.

Always test a small offcut and follow the machine manual, material safety information and local rules.

Need help choosing a machine? Send us your material, thickness, maximum bend length and daily output.