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Mar 13, 2005 | 08:23 PM

#11

fozzz

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Jig saw??? A router will give you a much better cut. I make all my cuts after the cabinet is all togther in most cases.

If you are planning on using 3 layers of 3/4" MDF I hope you can still lift it. That's a tonn of wood. You might get resluts just as good with a single layer (or maybe 2) with proper bracing.

Mar 13, 2005 | 09:18 PM

#12

Vanilla Gorilla

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Quote:

Originally posted by Dukk:
If you have an object and you bend it, the maximum shear force is in the plane through the middle of it. I would rather have that force through the middle of a sheet then along a glue joint.

Mar 13, 2005 | 09:24 PM

#13

MTA

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if glued properly the wood will split before the glued joint

I would just stick to what you ahve and laminate your two pieces for the baffle..and use some left overs for internal bracing...that will give you the strength you need and limit the resonances...assuming your not doing SPL or any other high power applications

[ March 13, 2005, 10:27 PM: Message edited by: MTA ]

Mar 14, 2005 | 01:41 PM

#14

Paul Niwranski

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Quote:

Originally posted by Haunz:
Dukk you expect that the edges of the box would have to put up with alot of sheer force... ? [img]tongue.gif[/img]

Except for a couple of situations, from what I can envision, most of the time the edge of a box would see only shear forces so I don't get your statement [img]graemlins/dunno.gif[/img] Internal pressure would be straight tensile but any impact would be shear.

Mar 14, 2005 | 01:44 PM

#15

Paul Niwranski

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Quote:

Originally posted by MTA:
if glued properly the wood will split before the glued joint

That's true. And putting that shear plane right through the glue joint will cause the glue to rip the face right apart. Burying that plane within a sheet will be more forgiving.

We're talking extremes here - 2 1/2" layers glued up is IMO better than one 3/4" layer so if 1/2" is what is there then go for it [img]smile.gif[/img]