Stiff doorknob on wood-burning stove

I've recently moved house and inherited a wood-burning stove. The
doorknob is unusably stiff. I've put on some WD40 equivalent (as
advised) and worked it back and forth. It seemed to get worse the more I
worked it. I then tried engine oil - it also got worse the more I worked
it. In neither case did I light the fire. It's now practically seized.
This behaviour defies common sense (well, mine anyway).
The knob consists of a threaded rod which goes through the door, one end
of which has some rod welded at right angles, the other end has the
handle screwed onto it. The thread seems in good condition.
Any suggestions?
Another Dave
Reply to
Another Dave
I wonder if what is happening is that the high level oils you are trying to lubricate with are dissolving the low level tars that have probably got onto the thread from the wood and are effectively smearing the softened tar over the threads.
Is it possible to get the door off and put the area with the handle into some paraffin with the aim of dissolving out the muck in the thread ?
Rob
Reply to
robgraham
What about "Coppaslip" or is it Copperslip. The stuff used to lubricate car brakes - and to smear onto sparkplug threads.
Reply to
John
Handle tightening up on rod? Hold the inner latch unscrew handle (might have a locking nut) remove bits and clean. Don't bother with any normal lubricant as it will burn off the first time you light a fire. Graphite should survive...
Reply to
Dave Liquorice
Thanks for all the suggestions.
Eventually I tried brute force and ignorance and with much grunting and swearing just forced the threaded rod to unscrew all the way out.
This revealed the source of the problem - the thread was knackered. Judicious use of a hacksaw on the bits of the thread normally resident inside the door has made the door usable though it's far from ideal.
I've no idea how it got into such a state :-(
Another Dave
Reply to
Another Dave

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