but I'm not sure how to do that. Is it just a matter of getting
something like an old toothbrush into the tips?
it is not the tips that are your problem it is the gas seal on the
handwheel that you turn. This has a tapered metal to metal fitting
and is very lightly greased to stop gas leaking out, in time the
grease wears away. It has one nut which if you take it off the largew
knurled knob will pull out sideways. It is a bit sensitive to put in
the right amount of grease and adjust the tightness, so that it is
easy to adjust with one hand. If you are unsure about doing it
yourself, get in touch with the Co. The tapered cone has a tiny hole
going through it that you must not block, it is just a very delicate
ga s tap, the tapered bit means that you can adjust how tight it is
to twist the knob, it should be comfrtable to do with the hand that
you hold the torch with, but not too easy.(I expect I am teaching my
grandmother to suck eggs!)
Here is the link to Flamefast (sorry, I got the name wrong before!)
I don't have any connection, I just had to track them down to get
one modified. I bought one in the mid 70's and the company has changed
but they still make the torches, and bigger ones.
PS If you do get it serviced get them to change the pilot light
screw, once they get old they are the very devil to get out without
regards Tim Blades.