My design would have a pivoting arm holding the PCB in the fluid and bump or rotate the arm with a cam. Why put the big container full of caustic liquid in motion when you can just move the PCB?
I've been nerd sniped thinking about this. Latest thinking: simple sliding bar clamp to hold two edges of the PCB. The PCB hangs down into the solvent tank. The bar on the clamp drops into vees at both ends. One end of the bar is bumped with a motorized cam, the other has a spring. The clamp+PCB oscillates back and forth and the arms agitate the fluid. When the cycle is complete you just lift the clamp+PCB out of the tank. The tank doesn't move. Tank shape can be optimized to minimize working fluid and agitation.
I've been nerd sniped thinking about this. Latest thinking: simple sliding bar clamp to hold two edges of the PCB. The PCB hangs down into the solvent tank. The bar on the clamp drops into vees at both ends. One end of the bar is bumped with a motorized cam, the other has a spring. The clamp+PCB oscillates back and forth and the arms agitate the fluid. When the cycle is complete you just lift the clamp+PCB out of the tank. The tank doesn't move. Tank shape can be optimized to minimize working fluid and agitation.