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The next step after you have tapped everything is to start fiberglassing. Before you mix your fiberglass with your hardener, you should cut strips out of your fiberglass mat. I usually make strips about 7-9 inches wide. When you are ready, what oven door sealing rope Suppliers you need to do is mix your fiberglass with your hardener in the mixing cup. The hardener will have how much fiberglass resin to hardener mix to make. Make sure you prepare before you start fiberglassing because it dries somewhat quick. Paint a layer of fiberglass resin onto the tape without any mat. After you've painted a layer put fiberglass mat down and paint another layer over fiberglass after that. Wait about 10 minutes and then do another layer before it dries completely.

Now, wait at least an hour and let the fiberglass resin completely dry. When its dry, you can take the mold out and tear off all the tape and aluminum foil. Put it back in your trunk and draw out where you want to cut off. Make sure you go slowly and don't take all of it off at once.

Now you need to cut out a MDF ring for your subwoofer to screw into. Some prefer to make a flush ring with a router but I like the one ring way better. I am using a 10 inch jl audio w3 so I cut out a 10 inch ring and used the specs from the box to make a ring the right size.

Then we pulled out our newly trimmed fiberglass box and put another layer of fiberglass mat on it. Generally you want to do about 5-6 layers of fiberglass. Some say you should be able to stand on your box without it breaking. Another good fiberglass lamp wick Manufacturers fiberglassing tip is to remove as many air bubbles as possible. This will make the mold a lot stronger because there's no air pockets. You do this by jabbing the fiberglass rather than actually trying to paint it.

Ok, enough playing around; back to fiberglassing! Next we put on a last layer of fiberglass mat and resin. After this has totally dried (about 3 hours) we started sanding and cutting to get the shape we wanted with our custom fiberglass sub box.

Once your back mold looks good to you its time to set your MDF ring up how to want your sub to be. Hold your ring up where you think you would like it. Cut some dowel rods to size and position your ring how you want it. We used superglue and epoxy to keep the dowel rods and the MDF ring in place. Its important that your ring is very strong and sturdy because we are going to stretch fleece over it.

Make sure that when your ring is in place every angle looks good and even to you. When you stretch the fiberglass and start painting resin on it, there's no turning back.