My anodizing tank has a bus bar that I designed on it to suit my needs. Notice the cathodes hang over the side of the tank and are bolted to a common aluminum bar. The two cathode bars are wired together under the lip of the tank. Look hard at the center of the back lip. You will see another aluminum pad. This pad is connected to the positive side of the power supply and is also the contact point for the rack.
I also use a good size aluminum air pump to pump air into the system. The air is filtered before it enteres the pump. This greatly reduces dirt and debris from entering the solution.
Anodizing tank. Mechanical agitation and airation included.
I also have a PLC which runs only my agitation motors for the time being. I opted for a PLC so that I can later adapt it to run a mechanical overhead crane system, control and monitor the heaters/chiller. Its economical and very versatile!
The PLC was installed to allow for automation later on down the road.
