Some of the issues our team has experienced, and that have caused issues with the mold running, are listed below:
1) Not standard parts used in the construction of the tool, springs cut to length and not ground flat resulting in uneven forces being applied to ejector plates. This caused ejector system to snag and pins to get stuck.
2) Core/cavity finished to the wrong dimensions so the moldmaker ‘welded the mold’ to add metal then reworked that area to the correct dimension. This ultimately led to inconsistent parts. Remedy was to machine out that section, add an insert of the correct steel specification and rework the shape and dimensions.
3) Poor workmanship with incorrect molds being used for the job, steel hammers on the mold, screwdrivers to upon the mold on the bench, molds not protected in storage resulting in rust and contamination.