Artful Dodger wrote:

The inside knob on my front door will not "bite" into the opposing
thread. Result: the knob comes loose and people have a lot of trouble
opening the door from inside.

I don't want to redo the whole installation because the outside is a
beautiful old fixture. What would happen if I glued the rod or shaft
(or whatever it's called) from the inside into the opposing thread?

TIA



I'm assuming you are describing an older door knob screwed onto a square
threaded shaft, with a set screw in the knob shank to keep it from
rotating on the shaft once it's been screwed down to its proper position.

If the female shaft threads in the knob are really stripped out, then
I'd suggest the proper repair would be to bore out the shaft hole in the
knob, soft solder a brass plug into that bore, drill and retap it to
suit the shaft and drill and retap the setscrew hole.

Failing that you might be able to use a helicoil to restore the knob's
inside threat, but the set screw hole could become problematical.

If you can't do any of the above, then take a shot at gluing the knob
onto the shaft. I'd recommend using "JB Weld" epoxy for that job.

Or. you could do what I did a six years ago when I had too much time on
my hands and decided I just had to trick out our home with a bunch of
antique brass doorknobs modified to fit its modern locksets, no two of
which now match:

http://home.comcast.net/~jwisnia18/jeff/knob.html

Jeff
--
Jeffry Wisnia
(W1BSV + Brass Rat '57 EE)
The speed of light is 1.8*10^12 furlongs per fortnight.