On Nov 15, 2005, at 2:07 PM, David C. Hallam wrote:
> Jim,
>
> 5052 will work OK.
For building 8171 PSUs, screwed and glued Douglas Fir 0.75" ADX plywood
is quite satisfactory. For 8281 amplifier PSUs, I would go with 1.0"
plywood, and for 8349s, 1.25" - with lead-lining, of course ,
> Go to you local metal salvage yard, i.e., scrap yard and
> see what you can find. I have gotten some pieces of aluminum sheet at
> attractive prices. Don't worry about what alloy it is.
In the L. A. area:
Industrial Metal Supply
8300 San Fernando Road, Sun Valley, CA
(818) 729-3333
sells new, sheet aluminum cut to order at reasonable prices.
>
> David
> KC2JD
>
> -----Original Message-----
> From: amps-bounces@contesting.com
> [mailto:amps-bounces@contesting.com]On
> Behalf Of Jim Kearman
> Sent: Monday, November 14, 2005 11:47 PM
> To: Amps
> Subject: [Amps] Aluminum alloys for panels?
>
>
> I need to make two panels and a baseplate for an amp. I could cut down
> 19"
> panels but would like to find a cheaper way. Does anyone know what
> alloy of
> aluminum is used for rack panels? I was thinking it was 6061 but I
> can't
> find it in .125-inch thickness. The hardest I can find in that
> thickness is
> 5052. This link compares them for hardness and machinibility:
>
> http://www.smallparts.com/products/descriptions/sma.cfm
>
> The baseplate is going to be about 17"x17" and has to hold a 33-lb
> transformer and the rest of the amp, so it needs to be fairly stiff.
> I'd
> like the panels to be stiff as well, especially the back, where I'll be
> hanging a heavy blower. Is 5052 okay? Thanks.
>
> 73,
>
> Jim, KR1S
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>
Richard L. Measures, AG6K, 805.386.3734. www.somis.org
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