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In Reply to: RE: Sonar Quest Plugs posted by bcowen on October 01, 2016 at 06:55:47
This will be a very beneficial test. All "copper" is not identical, as there are so many different formulations, and a visual inspection tells us little.
As the variables are limited to just the unplated copper connectors (which many people prefer to plated), this will be a great service to all of us.
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Copper is non ferrus and should not stick to a magnet. This is my first test of anything made from copper. You wouldn't believe how much product is on the market that professes to be pure copper that will stick to a magnet. Total rip off.
Just did. No magnetic attraction at all to the copper. Interestingly though, the screws that secure the outer body are magnetic as hell. I thought they were aluminum, but they're obviously a carbon steel with a plating. Shouldn't be too difficult to find some aluminum or 300 series stainless screws to replace them.
And if you want a really strong magnet to play with, go get that old 5 1/4" hard drive that's corroding in the forgotten box in the basement and take a sledgehammer to it (or I guess you could remove screws and stuff, but the sledgehammer is way more fun). The magnets inside those things will give you a nice blood blister if you get your finger between the magnet and something ferrous. Ask me how I know. :)
I found the same problem with some higher-grade Hubbell plugs I had planned to use for a custom Cooker adaptor. The set screws were highly magnetic. Trying to remove them (in their patented structure) looked to be a fools' errand, so I sadly said "no go".Be aware that the stainless screws (which is a great idea, btw) need to match the thread pattern of the (likely Chinese) screws you want to replace. I went through that exercise as well on another adaptor. Size was fine, the thread pattern wasn't. I even went to a local fastener distributor, hoping for success. Even with all their inventory, including metric, nothing would match up. No go there as well.
Edits: 10/04/16
Thanks Alan. Perhaps "shouldn't be too difficult" will prove to be an overly optimistic perception.
I'll give one of the screws to my Fastenal guy and let him do the work. He's in the plant every Thursday. Worst case, I can always ditch the screws and glue it together. :)
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