fiberglass box help
07-11-2006, 08:01 PM
#1
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Thread Starter
Join Date: Jun 2006
Posts: 14
fiberglass box help
so i started building my fiberglass enclosure. Here is the process I'm using:
1. building sub rings / base out of mdf board
2. covering the rings / base with fleece
3. coating the fleece with a layer of fiberglass resin
4. puting 2 layers of fiberglass mat on the outside of the enclosure
Now my questions are:
1.What kind of fleece should i use, thin, stretchy, not cotton? (i havent bought it yet that's why im asking now)
2. Does it matter if i put the fiberglass mat on the inside or the outside of the enclosure? (i read a tutorial that said its stronger to fiberglass the mat on the inside)
1. building sub rings / base out of mdf board
2. covering the rings / base with fleece
3. coating the fleece with a layer of fiberglass resin
4. puting 2 layers of fiberglass mat on the outside of the enclosure
Now my questions are:
1.What kind of fleece should i use, thin, stretchy, not cotton? (i havent bought it yet that's why im asking now)
2. Does it matter if i put the fiberglass mat on the inside or the outside of the enclosure? (i read a tutorial that said its stronger to fiberglass the mat on the inside)
07-11-2006, 11:32 PM
#2
I like to use speaker grill cloth as it is far stretchier material in all directions. It is no stronger to putting it on the inside as compared to the outside IMO, what it does save is a heapload of time sanding and little to no bondo if you do it right. You can apply 3 or 4 coats of resin to the cloth and build it up nice and smooth wheres fibreglass is going to have more work associated to it to smooth it all out (for a beginner anyways).
07-12-2006, 12:06 AM
#4
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Join Date: Jun 2006
Posts: 14
Originally Posted by MR2NR
You can apply 3 or 4 coats of resin to the cloth and build it up nice and smooth wheres fibreglass is going to have more work associated to it to smooth it all out (for a beginner anyways).
so I can just put 3-4 coats of resin on the cloth and it would be strong enough? which means i would not have to use fiberglass at all?
07-12-2006, 01:16 AM
#5
Originally Posted by kash480
so I can just put 3-4 coats of resin on the cloth and it would be strong enough? which means i would not have to use fiberglass at all?
The tick is to stetch the fleece, t-, or grill cloth (whatever you en up using), then apply a few coats of resin to the outside so that you hve a hard surface to apply you mat to the inside, so once you have put on 3-4 layers, or how everr many you are going to apply, you are left with a smooth surface on the outside which requires minimal sanding and filler to get a good finish on...
resin and fleece is not vey strong on it's own, it's only used to get the desired share before layup is started.
regards, Mark
07-12-2006, 10:08 PM
#8
your subs will sound better if you use fibre, resin alone will crack and fatigue.
thick is better for subs. l quess glassing the inside would save time.
as you work think strength of cabinet, less flex better sound. good luck
thick is better for subs. l quess glassing the inside would save time.
as you work think strength of cabinet, less flex better sound. good luck
