Now I've done a bit of testing, I'm a lot happier and more comfortable with what I've got to do. The test rectangles showed there was a small improvement with rounding the edges so I decided to do that.
Category archives: Metal preparation
Enamel adhesion is improved if the steel's surface is roughened. I need a homogeneous roughness, a sort of even unevenness.
OK, so it's time to do some sandblasting!
I need to make sure the steel is completely free of oil and grease before I enamel it. A good test, to see if it's grease-free, is to run water down the steel and see if the water pulls away from anywhere on the steel surface.