Wednesday, November 9, 2011
The oil is formulated for this purpose, and most important, has a high flash point which reduces the chance of my bucket catching on fire. Automatic transmission fluid works well, but I've set the bucket on fire more than once. And it ain't easy to put out. Motor oil doesn't work well, but some of the vegetable oils do.
I then put them back in the oven for a 2 hours at a specific temperature(350 degrees for this steel) to temper them. Tempering makes them where they are not as brittle.