1) Measure the front and sides between the boards that run lengthwise to get your door sides and stiles. Out of your 1X 4 stock, you will be cutting 7 of these...three in front and two per side. Ours are 2 inches wide. See photo D.
2) Measure your bucket and faucets to see how much bucket can show above the counter and the circumference of the hole. We had a 4" reveal and 14" circle. Mark the hole.
3) Beginning with a hole saw, then jigsaw, cut the hole in your plywood keeping the sink closely to the front but clearing the cabinet front. Note: Our 1st antique bucket sprang several tiny leaks when we got ready to install it, so check carefully. New buckets *aged* with Lysol Toiletbowl Cleaner work great! There are several tutorials on the Net. We used it to age our zinc flashing.
4) Lay your flashing over the top exactly where you want it and from underneath, mark the sink's hole with a Sharpie so you can begin the hole cutout before gluing it down. *We had leftover Liquid Nails Adhesive (for metal to wood).
5) Apply adhesive onto the plywood, then lay the flashing on the top. Be careful! Wear gloves and eye protection when working with metal. See photo C.
6) Instead of soldering the corners, wrap them like a gift. Hammer them into place and then sand smooth with emery cloth. No sharp corners!!!!! We also used tiny 1/2" nails to secure any stubborn spots and underneath...and even on sides. It's not supposed to be perfect-Yay! Sand all edges.
7) Weight the top down while the glue sets up. We used two 5 gallon paint can that were full.
8) After the glue sets 24 hours, finish cutting sink's hole making sure to *clip* edges (just like sewing) so the zinc can fold in around the edge.
9) Dry fit the bucket.
More to come...get ready to build the backsplash.