Hello, I am looking to paint my tanks, but I already assembled them. I was thinking that it would be easier to paint if I disassembled them first. I was hoping someone might have already done this process and has tips. I was told for hard plastics like this that Simple Green works, but I do not want to risk destroying the tank I soak.
Thanks again

Simple Green is your best and only reasonable choice. Acetone and derivatives thereof will eat the plastic. My recommendation is to place the tank in the bottom of a small pyrex sealable container with enough simple Green to cover it. Leave it to sit for two days, giving it a mild shake after the first day. Then scrub it down with an old toothbrush, still in the simple Green-filled container. Rinse and allow to dry before repainting.

Stripping plastic is always a hassle, so take your time and do it right.

Save any weathering till all is glued together though. Will look more natural.

I paint whole hull and turret seperate, but that works for me. Id advise M10 varients maybe paint as seperate components if you struggle as they are open topped.

I thought Simple Green was only for stripping old paint, I wasn't aware that it was for ungluing parts too. Anyway, if you used cryanocylics to glue your tank together ( the stuff that forms a plastic bond between two plastic pieces) then I don't think there is anything short of a surgeon's scalpel that will separate those parts. If you used a white glue or "school glue" then maybe soaking the tank in water can dissolve the adhesive.

Still, I agree with the above, get a nice spray primer, and a base color, and paint the assembled tank. Then go over your details with brush work and specific colors.