I'm building a 24" wide THT as per the original plans, the only deviation being instead of PL premium I am using Gorilla glue. The material is 1/2" 9 ply cabinet grade baltic birch plywood. The Tuba will be loaded with a RSS390HF-4 driver.
In construction I have not had to use any jigs or guideboards except a long piece I screw down to align pieces with the lines on the first side.
In the beginning:
Woofer burn-in (I don't think I want to do this with it installed):
Dubwoofer wrote:
I already had a bunch of gorilla glue, so I didn't need to buy anything.
If Gorilla was a viable substitute it would say so in the plans. It has nowhere near the strength of PL. It may work OK, but if you have a leak where you can't reach it you're screwed.
Dubwoofer wrote:
I already had a bunch of gorilla glue, so I didn't need to buy anything.
If Gorilla was a viable substitute it would say so in the plans. It has nowhere near the strength of PL. It may work OK, but if you have a leak where you can't reach it you're screwed.
I thought gorilla glue was urethane based
If guess we'll see what happens. So far I don't have any visible gaps and my pieces are lining up perfectly. I caulked the woofer chamber for good measure and I'll finish fastening the sides with a brad nailer.
Dubwoofer wrote:
I thought gorilla glue was urethane based
It is, but it's not in the same league as PL.
"Gorilla Glue" is a treacle-like glue and Bill is right, it's not the best to use in BFM cab construction.
Gorilla Grip Express on the other hand is a 100% expanding polyurethane and is the same leage as PL, but often gets called Gorilla Glue. PL has a colourant added as it's widely used in the construction industry in the USA, the colourant being a woody colour ( brownish ) http://www.holdfast.co.nz/pages/product ... psid=20075
Semi-retired: Former Australia and New Zealand Authorised BFM cab builder.
88h88 wrote:That looks like a mighty clean build due to the glue you've used. Be sure to double and triple check it for leaks before you put the side on.
+2
I would even caulk the side edges before you close it up. You won't be able to reach them once the second side is on.
I know money often seals the deal, but seriously, quality is an investment, not an expense... Grant Bunter
Accept the fact that airtight and well-braced are more important than pretty on the inside. Bill Fitzmaurice
I hope it doesn't leak any..it'd be a shame. 
Semi-retired: Former Australia and New Zealand Authorised BFM cab builder.
