Chemicals = Vinegar and Baking Soda.Are you bead blasting the tools or chemical cleaning?
If I had a bead blaster no telling what would happen.
Some of the stuff calls for a wire brush, sometimes a wire wheel on a drill. occasionally I need some mag wheel cleaner, or brake cleaner but I try to avoid it.
The Vinegar method is fantastic on hardened old steel.
Situations change the methods occasionally, the vise was vinegar, soda, acetone, wheel, acetone...