Layered up.

Laying of the plywood with epoxy between is moving along. I'm using a microfiber thickening in the epoxy, and laying down a thick layer between the plywood layers. Making sure I'm getting a good "ozing-out" so there is no air pockets. I'm also sealing both sides of the plywood with CPES (Smith's Clear Penetrating Epoxy Sealer) as well.

Second layer.

Third layer goes down, with an initial fairing of the second.

The third layer is laid, making sure I'm getting nice tight joints by hand planing each 6" (150 mm) plywood strip for a nice joint. An initial fairing, and then screw the bottom down to chines, keel and frames with #10 x 1 1/4" silicon bronze screws.

Once again sealed with CEPS before finish fairing. 

"West system" bottom

With the keel done, all the frames faired in, it's time to lay the new bottom. The original bottom on this boat was a 9 mm (3/8") single piece molded plywood, shaped in big shaped presses at the Riva plant.

My new bottom will be cold molded, or what it's known as in the US a "West System" bottom. Named after the use of West System epoxy though I will use a different brand epoxy. I got in contact with a whole seller and could purchase 13 kg for less than the cost of 5 kg West System.

For plywood material I imported BS-1088 quality Marine plywood from Robbins Plywood in the UK. I will lay three (3) layer with 3 mm plywood, with thickened epoxy between.

The plywood is attached to the keel, chines and frames with 3M5200, and stapled in place with marine use Monel rustproof staples. When all layer are done, I will use silicon bronze screws to the frames, as original. I will also use CPES (Smith's clear penetrating epoxy sealer) on both sides of the plywood before laminating.

First layer done. Two more with epoxy between.