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Author Topic: dovetail joints  (Read 2177 times)

Alan Searchwell

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dovetail joints
« on: June 29, 2004, 01:26:32 am »

I've been lurking on this forum ever since it started and I'm just now getting ready to build my own LAB subs.

While thinking about the construction of the modules, it occurred to me that using dovetail joints to join the "back" of the throat module to the top and bottom of the module, could produce a very strong airtight joint. I have done a search on "dovetail jigs" and seen where they range in price from US$120 to $350. These jigs work with a router  and take 5 to ten minutes per joint once the jig is set up properly.

1)Has anybody used dovetail joints to make their throat modules?

2)Apart from the cost of the jig, the requirement for the router and whatever bits and the extra few minutes per joint, is their any reason why dovetail joints should NOT be used?

3)Considering the cost of building four or more of these puppies, am I right in thinking that a $120 for a dovetail jig might be a worthwhile investment for the extra integrity of the joints it will produce?
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John Halliburton

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Re: dovetail joints
« Reply #1 on: June 29, 2004, 09:33:35 am »

You really needn't worry about dovetail joinery in this cabinet.  There are so many pieces going in multiple directions that the potential strength benefits of dovetails aren't worth the time/money.  Butt joints, screws, nails, and RTV silicone sealant for any joints you're worrying about airtight seals will be fine.

Best regards,

John Halliburton
Servodrive/Sound Physics Labs, Inc.
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Tom Bourke

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Re: dovetail joints
« Reply #2 on: June 29, 2004, 11:16:43 am »

I would think the dovetail joints would be very difficult to do on all of the angles involved with this box.  When I get around to building some I will be using biscuit joints an air nailer and TiteBond II wood glue.

Tom B
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