QUOTE(inquisytor @ Jan 31 2010, 02:04 AM)
That's a ultrasonic cleaner if I'm not mistaken. It's use to clean the part properly so that there's no residue / plastic dust sticking on the parts after sanding. It's done so that when you paint the kit, there won't be those little dust particle sticking under your paint. It's also use to clean resin kits before assembly, just to clean the part properly off the residue from the factory mold.
Not an absolute process for model kits. But if you paint ur kits, best if you make sure the parts are really clean.
And this machine is good for cleaning air brush too

makes your life much easier.
I think someone will ask where to buy

You can get it at pasar road if you are from KL. Price? china make around RM80 ~120, good quality like ProKits cost about RM250~400.
I am using the Osim I-Sonic, works good. Using ultrasonic vibrations to clean.
Yes, it really makes life easier, instead of washing and brushing each parts with a toothbrush to remove the mold release agent prior to painting. I just put them in the ultrasonic cleaner, few drops of dishwasher liquid in the water and few minutes later all nicely clean.
Its good for cleaning watches, jeweleries, specs and just about anything else that fits into it.