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RE: copper tubing thickness?
Original poster: "Dwight Harm by way of Terry Fritz <teslalist@qwest.net>" <dwighth@traxsoft.com>
Thanks for all the good info!
FYI, McMaster-Carr has the thin-walled "refrigerator" tubing in both 1/4"
and 3/8" actual OD, both a lot cheaper than their general purpose tubing
(also available in those sizes). The refrig tubing is .030"-.032" wall,
while the general purpose stuff is .049"-.065". Catalog page is
http://www.mcmaster.com/cgi/enter.cgi?pagenum=0109
It sounds like the .030" wall, 1/4" OD stuff would be fine; runs $13.27 for
50'.
Dwight.
> -----Original Message-----
> From: Tesla list [mailto:tesla@pupman.com]
> Sent: Saturday, March 01, 2003 7:42 PM
> To: tesla@pupman.com
> Subject: Re: copper tubing thickness?
>
>
> Original poster: "Jim Lux by way of Terry Fritz
> <teslalist@qwest.net>" <jimlux@earthlink.net>
>
> > Not at all. 1/4" copper tubing is overkill for even a 12/60 although
most
> > use it for high power NSTs (12/60 and 15/60) because its readily
available,
> > easy to use, and inexpensive.
>
> 1/4" nominal tubing (not refrigerator) is 3/8" od and is easy to work
with..
> 1/4" OD tubing is quite small, and, having checked this afternoon at the
> local hardware emporium, is actually more expensive. I think it's because
> the wall is a lot thicker on the 1/4" OD tubing than on the 3/8" OD (1/4
> nominal size) pipe. The 1/4 refrig tubing I saw was also a LOT softer than
> the 1/4 soft copper pipe.
>
> Actually, for a smallish coil, bare #8 solid copper wire is another
> alternative.
<snip>