|Thermal Insertion. The inserts are heated by placing them over the hole and pressing them in with a heated tool. The tool first heats the insert, then the insert is pressed in.
The advantage of this method is that the special tooling necessary is relatively simple, usually a cylindrical tool, which can be easily, fabricated in the machine shop. The cycle times are usually short.
However, care has to be taken, not to overheat the insert or the plastic, or it will lead to local plastic degradation.