Hi all. I’m installing some steel trunking and need to create the recess/ dimple/ sewage in the covers to fit the turnbuckle screws. I know there is a tool to do this, but cannot find one when searching t’internet. It’s similar to a screwed hole punch in that the bolt goes through the 10mm hole and you wind it in so that the domed male side pushes the cover material into the female die to create the recess. Does anyone know the correct name for the tool, or who makes it, or where I can buy one?
