EMRFD Message Archive 1120
Message Date From Subject 1120 2007-10-28 10:50:45 Mike Scott Finger Stock source Does anyone know of a source for finger stock? I have tried the usual
Google search and can find manufacturers but not retail sources for
small quantities. I want to try the finger stock approch to close rf
tight boxes I have made out of PC boards.
1121 2007-10-28 20:22:45 Ken Stiles Re: Finger Stock source 1123 2007-10-28 20:57:46 Mike Scott Re: Finger Stock source Ken,
Thanks for the reply and pointer to finger stock at Surplus Sales of
Nebraska. I found what they have. Maybe finger stock is just plain
expensive but I always wonder about this source as they seem pretty
high for every item I have looked for in the past.
I like the idea of copper tape. I have never used it. I am looking
into it. It sure is less expensive.
1124 2007-10-28 23:17:09 Leon Re: Finger Stock source ----- Original Message -----
1125 2007-10-29 04:01:48 w4zcb77 Re: Finger Stock source > Thanks for the reply and pointer to finger stock at Surplus Salesof
> Nebraska. I found what they have. Maybe finger stock is just plainpretty
> expensive but I always wonder about this source as they seem
> high for every item I have looked for in the past.Hi Mike
> I like the idea of copper tape. I have never used it. I am looking
> into it. It sure is less expensive.
> Tarzana, CA
SS of N don't seem priced out of sight, they really are! However,
they do have stock on about everything it seems, and it's probably
expensive to warehouse it all.
WRT a finger stock substitute, I have a shear and can cut PCB
material pretty close, so often use copper tape. Comes in variuos
widths from stained glass stores. (And equally often, just use a LOT
of wire end vias) to bond both faces of PCB material. One other
trick not mentioned (yet), particularly useful if you're NOT blessed
with a shear, is the braid off a hunk of coax used in compression
mode. RG-174 makes a neat interface between boards and can "fill"
unintentional gaps. RG-313 is even better, with the double shield,
you get 2 lengths out of each piece!
1126 2007-10-29 05:52:48 Rick Commo Re: Finger Stock source
For copper tape you can try this source:
Stewart-McDonald is supply house for guitars and the like. Apparently the copper tape is used in electric guitars for shielding. They have widths of 2”, ¾” and ¼”. The rolls are 180” long and the adhesive is also conductive. The prices are $10.29, $6.73 and 2.25 for the three widths respectively. You can save a couple of bucks when you 3-roll pack (one roll of each width) for $17.29, which is the route that I took. I really didn’t look hard for cheaper sources but there might be some out there. Anyone else know of any?
In my application I used the combo of the wide and narrow tape to wrap around some ½” pvc pipe to make a dual-band FM antenna ala the QST article some months ago. Worked well and was you can solder to it.
1127 2007-10-29 06:02:35 Robert Cerreto Re: Finger Stock source Mike and Fellow Experimenters,
Try this address:
The cost looks reasonable and it's made for shielding.
73 , Bob WA!FXT
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1129 2007-10-29 23:24:49 jr_dakota Re: Finger Stock source I have first hand experience with that product in it's intended use
... I use copper sheets for embossing purchased at a hobby store and
use the Stewmac tape on the seams when do a full cavity shielding of a
guitar ... it makes a huge difference when using an electric guitar
with a computer based recording setup .... And the adhesive is
conductive as advertised and has held up for over 8 years