I built my first washer from acrylic and patterned it after the Zone VI design. It was/is capable of washing 6 -- 16X20 inch prints. The cost was something in the area of $100.00 as I recall. Acrylic is fairly easy to work with, it can be sawn on a table saw (my supplier sawed mine for me). The glue works by "wicking" between mating surfaces. I still have this washer as a companion to my Zone VI washer. Both work very well.