wood/metal laminate for case

mltaunt · 6th November 2002, 01:51 AM

I'm thinking of making material for a case by laminating a sheet of aluminium to a sheet of 1/2" plywood. Would this give me the same protection from RF interference as a metal case?

Peter Daniel · 6th November 2002, 02:01 AM

Check this thread. Mu-metal is abest material for shielding, and at the offered price it is almost a steal.

Mumetal For Sale

jgwinner · 6th November 2002, 03:08 AM

As near as I remember from my 'waves and fields' EE class, where we actually worked the math, I don't think it matters as long as it's a conductor, and it completly coveres the object. "Covers" means no openings smaller than the wavelength you want to contain.

The reason microwave ovens have holes in the screen, is that the microwaves can't get through, but light can.

That's how I remember which way wavelength goes - light is a higher frequency (MUCH!) than the microwaves; you can see through, but the microwaves can't.

Wouldn't mind someone else commenting though.

mltaunt · 7th November 2002, 04:24 PM

[QUOTE]Originally posted by jgwinner
[B]As near as I remember from my 'waves and fields' EE class, where we actually worked the math, I don't think it matters as long as it's a conductor, and it completly coveres the object. "Covers" means no openings smaller than the wavelength you want to contain.

Do you mean no holes larger?

jgwinner · 7th November 2002, 05:30 PM

Yep, that would make more sense

dhaen · 7th November 2002, 05:48 PM

Mumetal is best used for magnetic sheilding.
Any conductive material can be assembled into an effective Faraday cage.

Blunt eh?

6th November 2002, 01:51 AM	#1
mltaunt diyAudio Member Join Date: Apr 2002 Location: USA Rochester Hills Michiga	wood/metal laminate for case I'm thinking of making material for a case by laminating a sheet of aluminium to a sheet of 1/2" plywood. Would this give me the same protection from RF interference as a metal case?

6th November 2002, 02:01 AM	#2
Peter Daniel diyAudio Member Join Date: Jul 2002 Location: Toronto, Canada	Check this thread. Mu-metal is abest material for shielding, and at the offered price it is almost a steal. Mumetal For Sale __________________ www.audiosector.com “Do something really well. See how much time it takes. It might be a product, a work of art, who knows? Then give it away cheaply, just because you feel that it should not cost so much, even if it took a lot of time and expensive materials to make it.” - JC

6th November 2002, 03:08 AM	#3
jgwinner diyAudio Member Join Date: Mar 2002 Location: Torrance, CA	As near as I remember from my 'waves and fields' EE class, where we actually worked the math, I don't think it matters as long as it's a conductor, and it completly coveres the object. "Covers" means no openings smaller than the wavelength you want to contain. The reason microwave ovens have holes in the screen, is that the microwaves can't get through, but light can. That's how I remember which way wavelength goes - light is a higher frequency (MUCH!) than the microwaves; you can see through, but the microwaves can't. Wouldn't mind someone else commenting though. __________________ == John ==

7th November 2002, 05:30 PM	#5
jgwinner diyAudio Member Join Date: Mar 2002 Location: Torrance, CA	Yep, that would make more sense __________________ == John ==

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7th November 2002, 04:24 PM	#4
mltaunt diyAudio Member Join Date: Apr 2002 Location: USA Rochester Hills Michiga	[QUOTE]Originally posted by jgwinner [B]As near as I remember from my 'waves and fields' EE class, where we actually worked the math, I don't think it matters as long as it's a conductor, and it completly coveres the object. "Covers" means no openings smaller than the wavelength you want to contain. Do you mean no holes larger?

7th November 2002, 05:48 PM	#6
dhaen diyAudio Moderator Emeritus Join Date: Jun 2002 Location: U.K.	Mumetal is best used for magnetic sheilding. Any conductive material can be assembled into an effective Faraday cage. Blunt eh?

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