The cadmium process is pretty simple. The equipment is simple. It's basically a rheostat controlling a small and variable amount of voltage supply. The voltage on the + side is connected to the cadmium balls which sit inside of titanium cages-- of which I have 24 cad balls (6 per cage) They are positioned in the 4 corners of my square 30 gal tank hung 2 each on 2 seperate 3/4" copper rods. The negative side is where you hang your work. It is also a 3/4" copper rod. By work I mean whatever you are plating. It all resides in a bath solution of sodium cyanide, steam treated distilled H20 and some Cad Brite for brightness. I usually start by dumping my dirty, rusty parts in an old deep fryer basket. That goes into my blast cabinet. I glass blast until they are all clean. Then I remove and degrease the parts. This is where the tedious part comes in. I use thin welding wire and wire up all the pieces individually in long strands--making sure no 2 parts are touching. When I get 3-5 good strands wired up, I hang them from the center coper rod and hit the switch. The amount of voltage given is contingent on the amount of work being plated. Generally 1.5 volts for a small batch and up to 5-6 volts for heavier loads. The positively charged cadmium is attracted to the negatively charged parts. Over the course of several minutes, the cadmium moves through the solution and plates whatever metal object is on the negative pole. If I had a picture of my set up, I'd post it and everyone who isn't familiar with this process would get it pretty quickly. Toughest part is getting your timing and voltage right. Too much voltage gives you porous and uneaven build up. The same goes with too much time in the tank. Too little time gives dull battle ship grey colored batches. Good news is that it's not permanent. Don't like the result?? Glass blast it and do it again until you do. That's how I learned. This is such a great set up for the home restoration guy. How many times have people taken bolts to a wire wheel only to have that shimmering finish flash rust in days? How many times has the guy (or gal) restoring his bike had to stop and wait for hardware to arrive in the mail because theirs is too far gone to use for restoration? It's also great for just doing that one little that needs to look nice. The devil is in the details. It's teathered well to my automotive repair shop as well. It has endless applications. Hope this helps! Cheers.
JCD