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View Full Version : How do you figure out the airspace in a fiberglassing



APitBullT
06-07-2005, 03:14 PM
Just want to know how you figure out the air space for the sub. do you just do it or something or does it not matter?

TPABlazer
06-07-2005, 03:18 PM
just do it or something, because it always matters.

First, try to get a "rough" idea of the area you are working with. Then when you get it built, take something like a shoebox, that you know the cu/ft of, and fill the shoebox with packing peanuts. Pour it in. then count the number of shoeboxes it takes to fill the enclosure.

AzGrower
06-07-2005, 03:21 PM
X 2 on the packing peanuts!

req
06-07-2005, 03:23 PM
yep. just aim higher than you want, and then when its too big - put a couple of closed-cell-foam blocks in there to take up the extra space :)

SSS 18734
06-07-2005, 03:24 PM
If you want to be precise you can fill it up with water, and measure how many liters it takes up, then convert that to square feet.

TPABlazer
06-07-2005, 03:32 PM
If you want to be precise you can fill it up with water, and measure how many liters it takes up, then convert that to square feet.

you can, but its a real pita..warping any wood, draining it out, letting it dry.

Decipha
06-07-2005, 04:19 PM
no blazer you make sure you insulate it with bags before you fill it up

RFmustang
06-07-2005, 09:02 PM
whats the equvalency for ltrs to cu ft?