Hey guys - great site here....i have startd my first large fiberglassing project. it is a combination MDF/fiberglass single 15" sub setup for my Acura integra hatch. I am using an Ascendant Audio (new company aimed at SQ subs, they use XBL^2 technology like Adire and Resonant Engineering) Atlas 15. Here are some pics and a CAD drawing I did with the essential box design. The pics some the MDF box, with the actual rear deck of the car from above the back seats taken out and used as a base for the fiberglass. i screwed it to the MDF box, then cut out the middle of it. it was made of a masonite material. i added a thin speaker ring (thin because i am limited on space, a 15 barely fits between the seats and the rear window) though it was thick enough to support the sub and screw into. I fleeced it and added 4 layers of glass. there was very slight flexing in the large flat areas before bondo but no longer. i am not worried about fiberglass strength really becasue no pressure will be exerted on it - the MDF box is all that will have pressure on it (and actually the fiberglass tunnel i made will too, connecting the speaker ring with the hole in the MDF and making a seal....i think i need to add a layer or 2 more that tunnel actually) i have bondoed the main section, and added a layer of high build primer to see the rough spots clearly. i then re bondoed and added another coat of HB primer. that is where i am at now. i need to finish sanding/spot puttying, primer, paint, and clear. the lower portion of the box that is MDF will be covered in black carpet. the top fiberglass section will be high gloss black. to clarify the design the 15" sub will actually face INTO the cabin. i have tested it and it sounds amazing. great SQ...Ascendant really delivered with its use of XBL^2 motors.
as for paint i have a trick up my sleeve that i dont think i have seen anyone on the internet talk about - i may be the first, lol!
anyway, i do not have a way to spray good quality clear, and i cant really afford to have this painted professionally. i came upon a product called Enviro-Tex while reading one of my Model Railroading magazines. This is a 2 part (epoxy) clear coat product that is 100 percent self leveling and dries very thick and hard in just one coat. once mixed, it pours out wit te consistency of honey (very thick stuf) and SLOWLY spreads over the work surface, using gravity to self level. with help from a brush on some spots to reduce surface tension, this stuf wil just keep spreading itself to the edge of the workpiece and excess will drip off. when it dries you get a hard, glass like finish that is completely free of orange peel. this is a great alternative for those of us that cant spray our clear on our fiberglass projects.
here is a pic of a key i made from scratch using only the metal portion of a standard key...i used QuikSteel to shape the key, flat black paint, then printed Acura emblems on photo paper, glued them to the flat black, the added Enviro-Tex....BTW, only drawback to this product is that is takes about 2 days to dry..as in, still sticky and you cant even touch it for 2 days or it will ruined....
anyway, here are some crappy camera phone pics...good ones to follow when i finish
even though it doesnt look it, it was actually pretty damn smooth when those pics were taken