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Old 11th August 2005, 11:00 PM   #1
squalor is offline squalor  United States
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Default Kofi Annan aides Dallas victims of squalor

I hate askin the UN for help but I'm desperate. These speakers are taking forever. First I listened to Planet10 and Bill Fitzgerald debate MDF or ply. Then finding a design I had a chance of pulling off. This will be my first home speaker. Then the problem of finding Baltic birch. I found a great deal on 1/2" Baltic in a town 40 miles away, I got three 5X5 sheets and a table saw.
Then hurricane Dennis came and I had to put the birch ply on my windows ! Geez, what next ? o.d.t.a.a.
Because Ron Clark's Dallas II plans call for .700" ply and my wood was .500" I did some redesigning to keep the cross section of the sound path the same area. I thought a double thickness baffle would help the sound. I also thought the center fold should be doubled since it was 27" long and only supported by the sides.

...now the big mistake...

I used Gorilla glue to laminate two 27"pieces . The glue expanded and there are gaps around the edges. I had enough wood left over to remake the baffles and the lamination worked well with the yellow glue. I don't have enough birch left to redo the 27" pieces so I am now trying to fill the gaps with yellow wood glue (pva?)
Would I be better off continuing to do this or should I just use 3/4 MDF for this one piece ?
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Old 12th August 2005, 02:30 AM   #2
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The UN simply doesn't have time to handle all speaker-related issues brought to its attention, but I will make an exception in this case.

In my experience with speaker building, I screw up a lot. So while I am not the person to ask questions of concerning good planning and execution, I may be able to advise with fixing things that didn't quite work out as planned.

I always use a little caulk to fill unplanned gaps. Some say rope caulk works well, but I like the lazy way with the stuff that doesn't require a caulk gun, but oozes out of a pressurized can with just the push of a finger.

I'd stay away from filling gaps with wood glue, but only because its messy and I don't think it will fill the gaps quite as well as caulk.

Good luck with your project!

Kofi
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Old 12th August 2005, 04:27 AM   #3
squalor is offline squalor  United States
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Quote:
oozes out of a pressurized can with just the push of a finger
...............er.....................so were not talking the bathroom stuff ?

Oh yea, and a few more questions may I ask you or the security council ? I have some 1/4 Luan plywood I was going to use to cover my plies. When I cut it the cut edge frays pretty badly. Is there anything I can do to get a smoother cut ?
I'm thinking of making the top of the speaker flip up to reveal a secret felt lined compartment. Will I pay a sonic penalty for doing this ?
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Old 12th August 2005, 06:03 AM   #4
Stocker is offline Stocker  United States
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try a specialty blade, cutting the proper direction.

or try tape on the pretty side while cutting.
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Old 12th August 2005, 08:50 AM   #5
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Hi!

I, too have made many mistakes on building cabinets. For general guide, see the link :

http://www.woodzone.com/tips/10_plyw...tting_tips.htm

PS : Masking tape is very useful when cutting ply.

Happy cutting....
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Old 12th August 2005, 12:19 PM   #6
squalor is offline squalor  United States
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Thanks Stocker and munster68, I read the link and will try the advice. I have a whole sheet to work with and only need a few strips.
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Old 12th August 2005, 07:08 PM   #7
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Quote:
..............er.....................so were not talking the bathroom stuff ?
The bathroom stuff should work fine. Your local Home Depot, Lowes, et. al. should carry it. Its a small can that is aerosol operated. The caulk comes out like shaving cream.

Mmmmmm.... Cream....

Kofi
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Old 17th August 2005, 06:25 AM   #8
oface is offline oface  United States
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on your cuts with ply ,, use some tape and change yoru balde to a finishing blade,, it will have bout 80-100 teeth .

with tape it should give you a very smooth and clean cut,,


good luck,,,


chris
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Old 20th August 2005, 03:40 PM   #9
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Default cutting plywood

For a smooth result when cross cutting plywood, on your line cut through the top "end grain" layer with a utility knife(new blade), then make cut on the "waste" side.
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Old 20th August 2005, 10:55 PM   #10
squalor is offline squalor  United States
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Hi MikeFarad , oface..... Thanx for the advice.
Although I was able to get some clean cuts on the 1/4" Luan it just wans't getting the effect I wanted. It would have stained very differently than the birch. I got some 1/2" quarter-round and will cover my plies with that.
Progress is slow. Being a pool tech in the middle of summer I'm bussier than a one legged man in a bum kicking contest.
Has anyone looked at my first attachment ? Is anyone else planning to build one of these ?
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