: Am getting ready to glass the hull of a panache. Want to put a second layer
: of glass below the waterline and an additional layer on the stem area.

: After I put the first layer down, let it dry until leathery, was going to put
: the second layer down and put the second coat of epoxy over the whole hull
: without sanding.

YES!

: Am assuming if I do this I'll need to let the epoxy completely dry in order
: to fair in the edges of second layer of fiberglass. I'll need to sand the
: whole hull before putting on the third coat of epoxy.

NO!

: Any better way to do this?

Once your second layer og glass below the waterline is wet-out glass your stems and apply 3-4 fillcoats to the whole hull. Then go on to strip you deck.

DO NOT DO AS ROSS SUGGESTS!

A second below the water layer of glass must be added over the full hull layer. This allows the edge of the second smaller layer to be feathered (sanded smooth) with the previous one. Whenever you will sand a surface the additional layer MUST be added on top. IF you put a smaller piece of glass under a larger layer of cloth a step down in the surface will be created at the edge of the partial layer. If you sand this edge you will cut through the full layer of cloth and destroy the integrity of the hull strength.

The Only time you can put a partial layer under a full layer of cloth is when you will NOT sand the surface. I do this on the INSIDE of a hull where I want to add another layer of cloth for strength. I do not sand the cloth on the inside of my boat except for varnishing purposes.

Glass your deck and fill the weave.

Glass the insides of your deck and hull and seam them together.

After you’ve added your exterior seams and stem reinforcement sand and feather edges with 80 grit. Watch carefully to prevent cutting into the cloth surface as you sand. The cloth will show up and a fine whiteish dot pattern as you start to cut the weave. STOP SANDING! Then I add two more coats of resin. This will fill the scratches of the 80 grit, fill the feathered exposed glass and leave a very smooth resin surface. You will be certain of not cutting into your cloth since you have new resin to sand and will not go deeper into the surface of the cloth. You can sand with 120 on the new resin. Then wet sand with 220 and you’re ready to varnish.

This is all in your instruction book.

PS, you can do it the way Ross suggests, just please leave a note in your Will saying you didn't follow my instructions

Thanks

Rob