Post your DIY aero pics
I use West epoxy for anything CF (including the CF on my splitter) but if you're just doing the standard 'glass (or simply a coat of resin without glass) baller epoxy is wasted there, poly will do just fine.
If all you want to do is waterproof it you're wasting your time with wet layed reinforcing cloth. I would put a coat of Kilz on both sides of your plywood, and rattle can it the color of your choice on the bits you can see. If you want to get fancy, you could try a two part flooring epoxy. I bet your local Sherwin Williams would give you a sample of it big enough to do your splitter for free.
I have also used polyethylene rub blocks on really low cars before by countersinking the PE, pre-drilling the holes, and cutting off stainless self-tapping screws to ~1/8" short of punching through the plywood. You can get PE strips from McMaster or US Plastics, or slice up white plastic cutting boards.
I have also used polyethylene rub blocks on really low cars before by countersinking the PE, pre-drilling the holes, and cutting off stainless self-tapping screws to ~1/8" short of punching through the plywood. You can get PE strips from McMaster or US Plastics, or slice up white plastic cutting boards.
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Doward, link to the stuff you used?
Last edited by aidandj; Jan 29, 2016 at 04:58 PM.
I painted the whole car with this stuff 
Shop Rust-Oleum Professional High Performance Gray Gloss Oil-Based Enamel Interior/Exterior Paint (Actual Net Contents: 128-fl oz) at Lowes.com
It's far from a specialized solution, but has worked long enough to outlast the splitter itself. I've damaged it enough to need a to cut a new one. I'll be painting it the same way again.

Shop Rust-Oleum Professional High Performance Gray Gloss Oil-Based Enamel Interior/Exterior Paint (Actual Net Contents: 128-fl oz) at Lowes.com
It's far from a specialized solution, but has worked long enough to outlast the splitter itself. I've damaged it enough to need a to cut a new one. I'll be painting it the same way again.
Hey gents,just looking for some opinions on whether or not how I've mounted my splitter should be sufficient. The front supports are bolted to existing holes in the bumper beam,the brackets I made are supporting the outer edges and the rear is held on with flat brackets and the small bolts that hold on the rear of the splash shield. I've been thinking about adding a few more to the center. (This is an old picture as well,its since been urethane'd and painted gloss black) Thanks!
It ain't DIY, but I thought you'd want to see what DG Motorsports has just made. Dave Green builds the tops that are sold through Mazda, and he also sells through 949, Goodwin, FM and direct.






It was designed around the GT3 dimensions, so you'd hope it fits... it clears the RZ bar with inches to spare.
Oh I DO hope, I think it'll greatly boost the sales of the ND GT3 
It just seems to me like the peak might be a bit too far forward, but I'd love to be wrong!
I'd expect it to clear the RZ by a good margin, but the GT3 is much bigger.

It just seems to me like the peak might be a bit too far forward, but I'd love to be wrong!
I'd expect it to clear the RZ by a good margin, but the GT3 is much bigger.










