Fiberglass Boxes

Hey hey!!

    I am pretty sure you guys beat the living crap out of the topic off fiberglass boxes BUT, after exploring many weeks on the net I noticed the installers start the box off with a mdf subwoofer ring on which they use a mesh cloth to hold the mold of fiberglass.  Where can I get a pair of rings for a 12" subs? i thought about doing it myself, I figure I am not that good with a jigsaw and I don't wanna invest 150 on a rotozip no matter how much they claim it will revolutionize my life, J/K.  ANY suggestions are welcome

Hi sach_deva, if you don't have a router, which would be the easiest thing to use to make them, you could do it with your jigsaw in a similiar fashion by using a circle guide to cut the outside edge first then the inside edge. If you want to recess them, you'll need to cut two different size rings with your jigsaw and sandwich them together vs. making just one with a router. 

the12volt

I've been doing alot of research in the fiberglass boxes and the trim rings seems to be a thing of the past. I've heard a new technique ( or just a different way of doing it ) . Instead of using a trim ring use a solid peice of MDF and cut the hole out afterwards. This will give the peice that your working on a stronger front end and also it's easier to work with than a trim ring. The hole that you cut out from the solid peice doesn't have to be pretty because it will be hidden behind the subwoofer or speakers any way. Hope this helps and if you want more info on glassing go to this site : https://clubs.yahoo.com/clubs/glassmanscustomforum

   To add to what Jeff said, using a solid piece and cutting out a hole later also makes for a flatter mounting surface for the speaker. A ring of MDF is more likely to distort (and thus not be perfectly flat) as you work it. Not a big problem, but a definite step away from higher quality.

   A Roto-Zip is a great investment. If you find the price a bit prohibitive, go to www.Harborfreight.com and look at the refurbished DeWalt versions. They're much cheaper and still do the job.  

   Dave

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