I had seen a Upright Wash Tub Bass being played on You-tube, and said to myself...gee I would like to own one of those. So I researched around the internet and found a set of plan similar to the bass I seen on You-tube ( http://dennishavlena.com/db.htm ).
The bass is based of the actual double bass measurements, it has a 41.5 scale and a 18 inch tub.
The following steps are the different stages as the bass comes too life.
Step 1: Step1
This tub is 18" round x 10" deep