Ok, I got through that without computer freeze.
Last thing we discussed was tabbing in the floor. I might add that you will want to mix up only as much resin as you can use in about 15 minutes. It will start to kick (harden) on you after that, and you will waste whatever is in the pot. You can continue to use the same brush, usually, for several pots.
Precut all of the mat you think you will need to use before you start. It is very hard to cut mat when your fingers are all coated with resin, and they will be coated. Wear throwaway latex gloves.
You can keep laying up layers of mat, one atop each other, for as many layers as you wish, but once you stop, and it cures, you have to grind it to get the wax that has risen to the top off. But as long as you are doing it at the same time, you can just keep going and going. Usually about 3 layers are about right for any corner tabs you do.
Mix the resin according to the can, and stir well. Paint on a heavy coat to wet out the underside of the mat you are about to lay down, then keep dabbing on more until it is translucent. You can keep putting successive layers onto the wet mat, and repeating that process.
For the piece that you want to install on the firewall, cut several pieces of mat the shape of the firewall (slightly bigger so it overlaps the side of the body a little) and paint a layer of resin all over the firewall. Then lay the first piece of mat down and dab enough resin all over it to wet it out, then repeat until you have 3 layers wetted out. What you are doing is creating a sticky base for the plywood to be placed onto.
Put the plywood down into this wet mat, center it, and put heavy weights on top of it to squish it down into the mat, and hold it until it cures. Let it set overnight, if possible, to get a good cure.
Here are some pictures of that.
Picture 1 is the dust I am talking about. This is after grinding the firewall interior.
Picture 2 is the firewall with a coat of resin painted on it
Picture 3 is the first layer of mat laid into the wet resin, but I have not painted a coat of resin on top of the mat yet....it is still dry
Picture 4 shows the heavy weights sitting on top of the finished plywood intall, till it dries.