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Old 2nd February 2007, 09:38 PM   #1
wixy is offline wixy  Australia
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Default What glue to use?

I'm about to start building these speakers out of mdf: http://www.fostexinternational.com/d...ez_enclrev.pdf

What type of glue should I use, or is any wood glue ok?

Would I need to use any screws?

Is it necessary to use some sort of sealent between the joints inside the cabinet?
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Old 2nd February 2007, 09:42 PM   #2
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Default Re: What glue to use?

Quote:
Originally posted by wixy
What type of glue should I use, or is any wood glue ok?
Any wood glue is fine. I use the yellow stuff but white is fine.

Quote:
[i]Would I need to use any screws?[/B]
It depends on how many clamps you have.

Quote:
[i]Is it necessary to use some sort of sealent between the joints inside the cabinet? [/B]
Not if you use lots of glue.

This is your first go at it?
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Old 2nd February 2007, 09:44 PM   #3
wixy is offline wixy  Australia
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Yep, first go. Thanks for the advice. I plan on getting some clamps and doing it all in stages, so I guess that means I won't need any screws?
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Old 3rd February 2007, 12:20 AM   #4
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My personal favourite is inside corner blocking and a brad nailer so all but the back of the cabinets have concealed fasteners. No clamps required and fast assembly once the blocks are in place.

Your way is fine if you don't mind waiting. No screws required.
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Old 3rd February 2007, 12:55 AM   #5
TerryO is offline TerryO  United States
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Cal said:

My personal favourite is inside corner blocking and a brad nailer so all but the back of the cabinets have concealed fasteners. No clamps required and fast assembly once the blocks are in place.

Your way is fine if you don't mind waiting. No screws required.

~~~~~~~~~~~~~~~~~~~~~~~~~~~
I have to agree with Cal on the use of cleats, it's as basic as can be and produces a strong cabinet. I've used nails, screws, clamps, straps, etc., and yet cleats and brads work just as well or better. It's pretty fast, which when you're using carpenter's glue is a factor that should be given a fair amount of consideration.

I like yellow glue best for MDF or ply and Weldwood for dark hardwoods. Weldwood is strong, but needs tight joints. I've used it for boatbuilding and the one criticism I heard for that application is that it isn't water proof because it won't hold if boiled. The late Capt. Pete Culler, boat designer and builder advised: "If you plan on boiling your boat don't use it!"


Seriously, Yellow glue is more than strong enough to preclude any further consideration.

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Old 3rd February 2007, 03:51 AM   #6
wixy is offline wixy  Australia
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I think I will give yellow glue a shot, thanks guys!
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Old 3rd February 2007, 04:09 AM   #7
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If you do decide to use screws (I do), be sure to use a countersinking drill for each screw. MFD has a tendency to split when you try to force a screw or nail in where there isn't a pilot hole.
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Old 3rd February 2007, 08:22 AM   #8
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Default Re: What glue to use?

Quote:
Originally posted by wixy
mdf 208ez_enclrev
Fostex -- and many namy people that have built these in mdf -- recommend that you use plywood.

dave
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Old 3rd February 2007, 10:14 AM   #9
Geoff H is offline Geoff H  Australia
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Slightly off topic, but I think worth noting. MDF (in this country anyway) seems to be non-consistent in density. I have noticed this on the jigsaw, panel saw, and drilling.

If you can, use a good quality outdoor grade ply.

Cleats not only make a stronger joint as others have pointed out, will provide more surface area to seal and make the joints air-tight.

I don't know what's in MDF, but I have noticed special glue (PVA type) and primer labelled for MDF.

FWIW I screw and glue. Too impatient for clamps.

Geoff.
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Old 3rd February 2007, 02:17 PM   #10
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Quote:
Originally posted by Geoff H
FWIW I screw and glue. Too impatient for clamps.
I use brads and blocks. Too impatient for screws and glue.
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