07-28-2013, 10:48 AM
Nice job on the screws Darren.
I use that blackening process myself, if you burn the oil off after dipping it makes the finish even more durable.
Ed: Steel has to have at least .3% carbon before it can be heat treated, so heating a piece of 1018 for instance, which is only .18% carbon will have no effect on it's hardness.
Tom
I use that blackening process myself, if you burn the oil off after dipping it makes the finish even more durable.
Ed: Steel has to have at least .3% carbon before it can be heat treated, so heating a piece of 1018 for instance, which is only .18% carbon will have no effect on it's hardness.
Tom