Suggestions on shielding the back of a cabinet pan

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jmaulz
Junior tube assistant
Posts: 14
(5/26/05 7:52 pm)
Reply  Suggestions on shielding the back of a cabinet panel that
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 faces the tubes?
Thanks, Mike.
 
tubenit
Hey get your own solder
Posts: 261
(5/26/05 8:07 pm)
Reply  shielding
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 Try copper window screening or steel (magnet will stick) as they are both conductive and perhaps better than aluminum.
 
Tiny Daddy
I only work on Fender's
Posts: 1234
(5/26/05 8:44 pm)
Reply  Re: Suggestions on shielding the back of a cabinet panel tha
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 How about that aluminum foil tape that Home Depot sells for taping furnace ducts.
 
LooseChange
I only work on Fender's
Posts: 583
(5/27/05 6:19 am)
Reply  Re: Suggestions on shielding the back of a cabinet panel tha
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 I use some of that aluminum flashing material you get in a roll from the hardware store. Cut and staplegun.
I suppose if you could find copper like that you would get a better electromagnetic shield.
 
bluesbear
I only work on Fender's
Posts: 520
(5/27/05 10:01 am)
Reply  Re: Suggestions on shielding the back of a cabinet panel tha
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 Does aluminum actually work? I know it's transparent to magnetic radiation. I'm sure copper or steel would work fine, though. A good craft store will have rolls of copper foil in different widths. I get 1' wide rolls for amp work and 1" wide for shielding guitars. An alternative source would be a store that sells stained glass window supplies.
Dave
 
triode3
Junior tube assistant
Posts: 29
(5/27/05 10:30 am)
Reply  Re: Al, Cu, Fe, etc
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Bluesbear, you are pretty much correct... the aluminium acts
as a great heat shield, but it is a poor shield (if any) for
electromagnetic radiation (e.g. field lines from the tranny, choke, etc).

If you want a good heat shield, aluminum is cheap and comes in great tapes... if you want good e-mag shielding, go for copper, light steel (beware, some finer grade steels are non-ferrous), alloys, etc.

I used to see copper tape (thick too, not super thin), and they used
to use it in old electronics equipment that was made with wooden cases... I am not sure where to get the thicker stuff. I mention this as it was easy to solder/drill/etc without tearing it up since it was thick.

 
boogielicious
Senior tube assistant
Posts: 160
(5/27/05 1:09 pm)
Reply  Re: Al, Cu, Fe, etc
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 You can get conductive copper tape at StewMac.

www.stewmac.com/shop/Elec..._Tape.html

This is what I use in my guitar cavities as well. It's self adhesive and you can solder too itl.

Scott
 
bluesbear
I only work on Fender's
Posts: 522
(5/27/05 6:25 pm)
Reply  Re: Al, Cu, Fe, etc
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 The stuff from the craft places is pretty thick. It's used to make lightly hammered copper lanterns. The stuff from the stained glass places is made to wrap around the edge of the gass for the melted lead to stick to. It's been years since I checked on the stained glass stuff, though. It used to be sheets that you cut but I wouldn't be surprised if it came in narrow strips... since the world has become so lazy that the hard (and interesting) parts of most hobbies are done for you now. Oh, well.
Dave
 
 
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