Repair metal joint in lamp
 

I have an antique oil lamp that has been converted to electricity. The lamp socket was screwed into the base but has only a couple of threads. Is there a way to solder it lightly without making a big mess? I just read about something called JB Weld. Has anyone ever used it?

JB Weld is a two part epoxy adhesive. You'll need a fairly large contact area to make it hold. Alternatively, you could probably solder it using lead acid solder, if you can clean the surfaces to be soldered thoroughly.

you can just but a longer rod (the part with the threads) you may also be able to back out the existing threaded rod a bit so you get more threads into the socket. I wouldn't try to solder it.

Can you post a picture? You may be able to use different hardware, as stated above.