[kenrinc]

Thanks Sean. Caliper is roughly 8" long, 6" wide and about 5" tall on one side. Sort of complicated by the mounting flange. I've lacquer masked the piston bores. The only reason I ask about the frothing and current density is that I believe I completely "wasted" my last zinc bath doing one of these things. I had calculated roughly 130sq in for the caliper and the foam was just so intense that after I was done I was left with this pile of yellow like shavings at the bottom of the tank. After that, the bath pretty much died. If I try to plate any part now, the part just turns black or dark grey regardless of current.

I sandblast my zinc annodes and assume they last until they are dust? I have about 6 of them but I calculate that if each side of the annode is in the bath then I have more than enough surface area. I actually used 4 when I tried the caliper. The annodes were probably 1/2 " away in some areas. The reason is just logistics; all I had is the small round 2 gallon bucket. This time around I'm going to try a 5 gallon bucket. The problem is the 1.5 gallon kit only works within certain containers. If you use a larger container, that means the bath will be shallow. I bought 3 gallons of bath this time so we shall see what happens. Thanks for your help.

Ken-