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How to Make a Fiberglass Subwoofer Box

Step 44. 1st Resin and Fiberglass Layer

4. 1st Resin and Fiberglass Layer
This is where all the fun and time goes into this project, it will take forever, but you need to take your time. (NOTE: It is very important you wear a face mask, and a good quality expensive one, not the disposable kind, the resin, and fiberglass fumes will get in your lungs and cause problems for you breathing. Get a good quality one from Home Depot, and work in a well ventilated area.)

Prepare your resin by mixing the recommended amount of hardener and resin as listed on the package. You will not want to work with large amount, or change the amount of hardener (you can vary it depending on temperature). I recommend that you use no more than 2 - 4oz at a time. I suggest mixing a batch in plastic cups and working in small areas. You should get about 30 minutes of work time, and good area coverage with the right amount of hardener, and resin.

Once you have prepared your resin, you will need to prepare the fiberglass. This isn't that hard, just rip up the matte into manageable strips, about 1" x 4" long. (Wear your mask!, and some disposable gloves at all times!)

Now you can finally begin. The procedure I used is quite like paper mache if you have ever done that. Take your cheapo brush, and dip it in resin, spreading it over the area your are going to be working on. Then take one of your glass strips and place it on there. Then use your brush again to dab resin onto the strip until it turns more transparent. (Look out for bubbles, if you see white areas bubbling up you have air trapped. Use your brush and try to spread out the air to get rid of it. Air bubbles could make your box boom itself to pieces if its too weak.) Continue laying fiberglass in this fashion, crossing over the other pieces until you have a good layer that covers the taped area. (Remeber to make your shell bigger than you actually want, you will trim it down later). Wait about 2 hours until it has dried and become touchable. (You can use a hair dryer to help speed up the process!)
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2 comments
Apr 26, 2010. 1:47 PMhandy adam says:
by rubbing talcum powder on your hands and arms first it blocks your pores and helps prevent itching
Jan 24, 2010. 7:58 AMHycro says:
Don't forget to protect your arms from the fibres...can cause an annoying itch until you wash yourself completely off...

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