Michael,
Are you using kerosene as a cutting fluid? We've had
better luck with that in softer than steel metals.
Bill
Feather River Solar Electric
Bill Battagin, Owner
4291 Nelson St.
Taylorsville, CA 95983
530.284.7849
CA Lic 874049
On 9/11/2022 7:00 PM, Michael Morningstar via RE-wrenches wrote:
We've gotten around needing UL listings for one-off in house
fabrication by running things through a licensed engineer. Right now
we are building a gutter bus which has two 1/2" x 4" x 20' copper bars
in a 10" x 10" gutter. We are using 2" x 9" x 9" UDPM plates with
slots routed out for the bars as insulators. This is for 24 Discover
AES and 8 Sol-Ark's. It usually costs about 1K to have an engineer
sign off on our designs.
I'd be interested in learning tricks for tapping 3/8" in thick copper.
I've never been able to get consistent results and resort to
thru-bolting.
--
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