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just found out about wire ferrels. made from tin coated copper. they are thin metal to just hold the wire together so as to make the connection under the holding set screw. makes the wire able to be pulled out and put back after. small dia there is a tool. but larger gets crushed to shape by...

what is blue gas and how it it supposed to replace lifepo4 batteries? i am not in the know, have no input from much or any real source, so this question is a shot in the dark for me.

thinking about solar on my roof, but house was build back in 1952. does anybody here know the general framing codes for how a roof support should be. to handle the weight of the panels up there. as i am not sure if the number of rafter or age will be enough support. but in doing all this i would...