From Christopher Moss:
The epoxy failed on the motorised Rondinax that my son made, so I decided to rebuild it. This time I have a wooden base with quarter-round strip to hold the tank in place. The motor is attached to the wooden base rather than to the tank. The tank can be lifted off to pour out solutions, and then placed back in situ, where the cogs will engage and rotation continues. Simpler, easier to use and I hope it will be sturdier. I’m planning to run a Fuji Superia 400 through it this afternoon.