Volume 10

Version 1.3

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Enter your search terms Submit search form     Web 350z-tech.com my350z.com 350zmotoring.com    350Z » Audio » Woofers » Woofs Pg6 MDF Rings and Poly Everything is starting to come together. The MDF Rings .. and next fix 'em in place .. then the polly. MDF Rings Completed In the various articles on constructing MDF Rings, I have seen routers with jigs used and rotory saws. I used a jig saw ... and can strongly advise you not to do so. It worked in the end but was a real pain. The jig saw does not cut straight, the blade bends so you end up spending extra time trying to fix that. I rounded over the edges of the rings with a sureform plane and sandpaper.   Test fitting I hot glued the rings into the woofer shell, making sure the ring was higher then the shell. I used scraps of wood to support the ring during the covering and fiberglassing. These temporary supports will be removed after the fiberglass sets up. The photos are of the is driver's side box, from three different views. Note: I found out that if you leave the box in you car - in the sun - that the hot glue joint becomes REALLY temporary!   Cover the boxes Here I covered the boxes with polyester felt. Spray both the woofer shell and the edges of the polyester with spray glue (I used 3M brand). The polyester is stretchy so just keep pulling and pressing until you get an unwrinkled surface. The smoother you get the polyester the easier the finishing will be. Coat the Polyester with Resin Everything is looking good at this point. I put on a heavy coat of resin, soaking the polyester until the resin started to pool on the surface. I will allow it to dry overnight, and tomorrow I will cut out the opening and put a couple thick coats of resin on the inside, paying attention to where the polyester cover attaches to the shell. Think I will purchase a Rotary Saw .. need something to cut out the top. I should have used one to cut the MDF rings. Ok .. next time ... Trimmed off the Excess Removing all the excess material gives me a better idea of how this project is coming out. It also will allow me to test fit these jokers in the car. Yes .. I'm getting antsy!!. Bondo'd and Primer'd Sanded the surface, applied a layer of Bondo. Sanded this down with 60 grit sand paper. Applied a good coat of Glazing & Spot Putty, sanded with 100 grit sandpaper and finally sprayed a coat of primer.   Page 5: Laying the Fiberglass Shell   Page 7: Finish Line   Comments       Add Comments © 1999, 2000, 2001, 2002, 2003, 2004, 2005, 2006, 2007, 2008 eTraxx.com