[HBR] Chassis kits

[john]

One can buy thin copper PCB material....I mean copper foil on a thin 
fiberglass PCB material VERY inexpensively on Ebay. You can cut this stuff 
with scissors but because of the 'glass backing it's quite strong.

It could be very easily glued down to a base material

John K5MO


At 05:23 PM 11/25/2014, Bill Fizette wrote:
>Brian,
>
>Roofing supplies or even roofers usually carry sheet Cu for gutter use on 
>expensive houses.  Or some sheet metal supply place can either cut you a 
>piece or steer you to one.  Don't recommend foil, as it won' t take the 
>heat so easily.  Considering the overall cost of the project, it shouldn't 
>add all that much to get some metal.
>
>73,  Bill  w2dgb
>
>
>----- Original Message ----- From: "Brian Burns" <brianburns1066 at gmail.com>
>To: "'HBR Receiver List'" <hbr at mailman.qth.net>
>Sent: Tuesday, November 25, 2014 1:44 PM
>Subject: Re: [HBR] Chassis kits
>
>
>>Hello Bill,
>>
>>Copper foil as a cover for plywood occurred to me, and has the advantage of
>>being solder-able. Copper prices have risen dramatically recently, but I'll
>>check to see what copper foil costs currently.
>>
>>Thanks for the suggestion (:->)...
>>
>>Cheers,
>>
>>Brian
>>
>>-----Original Message-----
>>From: HBR [mailto:hbr-bounces at mailman.qth.net] On Behalf Of Bill Fizette
>>Sent: Tuesday, November 25, 2014 10:25 AM
>>To: HBR Receiver List
>>Subject: Re: [HBR] Chassis kits
>>
>>Here we are again. My apologies, but the bells are ringing!   And again,
>>nothing new about using plywood covered with a grounding metal.  A 1920s REL
>>receiver on my project list used a plywood plate covered with a sheet of Cu.
>>
>>A commercial item, it worked originally so I fully expect it to work again.
>>
>>73 to all,  and Happy Thanksgiving, in spite of the big snow heading our
>>way.
>>
>>Bill    w2dgb
>>
>>----- Original Message -----
>>From: "Brian Burns" <brianburns1066 at gmail.com>
>>To: "'HBR Receiver List'" <hbr at mailman.qth.net>
>>Sent: Tuesday, November 25, 2014 11:07 AM
>>Subject: Re: [HBR] Chassis kits
>>
>>
>>>Hello All,
>>>
>>>One method that hasn't been mentioned is what I call "Cabinetmaker's
>>>Delight" construction. Remember the "Plumber's Delight" construction
>>>method
>>>for beam antennas that was so popular back in the day?
>>>
>>>This is just a thought experiment for me at this point. What about plywood
>>>framing with heavy aluminum foil as a conductive covering? This would
>>>allow
>>>connecting the parts with wood screws so that they could be disassembled
>>>for
>>>convenience.
>>>
>>>Basic mounting of components could be done on a heavy aluminum plate, and
>>>smaller aluminum plates could be added in. Mix and match as necessary.
>>>Plywood is mechanically stiff, a good thermal insulator, cheap, and easy
>>>to
>>>work. Has anyone tried this type of construction?
>>>
>>>Cheers,
>>>
>>>Brian
>>>
>>>
>>>
>>>
>>>
>>>
>>>
>>>
>>>
>>>
>>>
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III 


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