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It will depend on the powder formulation, but typically several mils.
To our metric friends, mils is how you refer to coating thickness here, you wouldn't encounter someone referring to thous as mils in general shop parlance.
. We don't use the term 'mils' over here, it is not our general shop parlance, we would say 'thou' instead.
Today's little test involved a block of brass in which I had a through threaded 1/2-13 hole. To that I added a tapped 8-32 hole, then screwed in appropriate screws. The assembly was then coated and baked with the same "cast iron" powder.The wire was used to suspend the piece from the oven grate.As it turned out, both screws were easily removed afterwards,
Quote from: Vixen on July 02, 2018, 06:49:09 PM. We don't use the term 'mils' over here, it is not our general shop parlance, we would say 'thou' instead. understood and agreed, same here....I was only clarifying mils is not shop parlance for thous, its a coating thing. Coatings are spec'd in mills, if you told a machinist the part was a mil big you'd get, well, some sort of look back