Three, 3/4" x 4' x 8' hardwood plywood panel for the Sides, Bottom Nailer, and Top Lid panels.
Lid-Stay Torsion Hinge.
1/2 pound, 1 5/8" Woodscrews.
Shelf paper to produce paper templates.
Wood plugs and/or wood filler.
#1 & #2 = 49 degrees each
#3 = 80 degrees
#4 = 76 degrees
#5 & #6 = 53 degrees each
Step 4, Assemble the Coffin Base Pieces- Select the Bottom panel, six side panels, and dry fit the pieces. Connect all points with glue, biscuits and/or 1 5/8" screws at the proper angles. Screw through all the side panels into the Bottom Panel to provide strength and rigidity to the coffin walls (counter sink all holes).
Step 5, Construct the Coffin Lid Cover- Select the remaining portion of the 4 x 8 plywood panel; Select the completed Coffin Base and place it upon the plywood panel; scribe the outline of the base. With the Circular Saw Cutting Guide, cut out the Coffin Lid.
Step 6, Finish the Coffin- Attach all decorations,add drain to side of coffin and seal, fill all holes with wood plugs and/or filler, sand, and apply stain and poly or paint; add the lid-stay torsion hinge.
All the parts came from Home Depot & Lowes except for the hinges that was found at Rockler. (Lid-Stay Torsion Hinge)
The liner is called FRP, from Home Depot. It comes in sheets and is similar to a shower liner. It is glued in and then the seams are caulked with white aquarium sealant.
The drain is just a simple bathroom sink drain.