I finally tried electrolytic de-rusting and I like it. I tried it on a sheet metal blower housing off a lawn mower and I was really impressed with the results. The pitted areas of the metal were blasted completely free of rust and the process removed most of the paint as well.
The downside is that I now have a dead Harbor Freight battery charger. I found a 24 V forklift battery charger that runs on 220 or440 and will deliver 12.5/25 amps. the guy wants $20 so this might be a good deal.
Is this a good candidate for making a dedicated power supply for an electrolytic de-rusting set up?
I know that a cheapy little battery charger will work but I assume that the forklift charger has much heavier internal components so it should last.
I also understand that the power requirements to de-rust vary depending on the surface area and the conductivity of the solution. Would it be easy to tweak this charger to make it so I could dial in an optimal setting?
Also, what sort of fuse or other safety should I be sure to build into the supply?