Geoff Hodbod wrote:
Hi,

I have a hinge on the temple rod of a pair of spectacles that is
broken. I think that it is spot welded on. Is there some kind of
fairly inexpensive tool that would help me remove this?

I would like to remove this and add a fresh hinge. I think that the
frames are some kind of nickel alloy. I was thinking of using this

"Silberfix" hard solder 62% Ag without Cd that has a melting point of
650 C and is suitable for bronze,nickel, stainless steel.

Do you think this would be tough enough? Is there some inexpensive
device that will allow you to solder at 650C?

I found this:
http://www.cybermarket.co.uk/ishop/923/shopscr1664.html
would this do?
No, it is VERY unlikely you could get air at 650 C from this. You
might be able to find an extremely hot soldering iron that will
reach these temperatures, but it might still not be hot enough
to melt the solder on the part to be repaired. I think a torch
is the only way to go, but you'd need a micro torch to avoid
melting the whole piece, if it was assembled with a solder or
low-temp braze originally. (Maybe there are no other soldered/brazed
joints on that part, if so then a larger torch might be safe.)

Jon