Sometimes I use wire cups and wheels on the grinder. Screwing them is easy but the clearance between the guard and the tool makes it very cumbersome to use an ordinary wrench to loosen them. And also they come in different sizes.

So instead of having to carry around two tools that aren’t fit I fashioned one with some flatbar. The welds are pretty enough for a beginner and this application.

After that I gently heated it over the stove to reach a lovely shade of iridescent blue: