I have just retrieved from the discarded junk at work a double section etch tank intended for small scale manufacture of PCBs using ferric chloride.
I intend to try it out as a print processor with developer in one section and fix in the other.
Each section has a heater and thermostat and (I'm not sure how useful this is) a bubble feature.
In the middle is a third section which can run clean cold water over the print via spray bars and out via a drain.
The lids also have a mesh holder which I think will easily hold 10 x 8 paper.
It just needs some serious cleaning now!