My gas tank and pto valve also need painting, and some small rust removal. I’m not going to put my gas tank in the tub so will have to hand sand that one. But the pto valve.. seems I should be good to put that in?
It is said to be a line of sight process. My experience is that is a pretty big overexaggeration but I'd think any overly complex workpiece would take more time. And don't forget the cleanup. There will be a sort of blackish, scum like film on the workpieces that sometimes required a light wire brushing. Very light but still.
I think your decision on the gas tank is correct and I wouldn't put the PTO valve in it either.
Just cleaned the anodes, though they weren’t extremely fouled. Pressure washed the piece. Almost no paint left but plenty of rust still. It’s beginning to look like deep heavy rust is not going to come off this method. Ordered a stripper off amazon linked to earlier in this thread and hoping that will do the trick.