The base and sides are done now. The base, upside down, has lots of area to be in contact with the floor, and it will not deform at all with the weight of 45 gallons of water:


And, one of the sides, made of 3/4" oak veneered plywood, with the corner piece already made. I had to cut 1/16" thick shims to make up for the difference in thickness between the plywood and the oak 1 X 2 at the edge, using just a Skil Saw. By using a clamp on saw guide, and some ingenuity it worked out well.


Next will be assembling the sides, back, base and top into a cabinet - tomorrow.