Don't know what brand of waxer you have, but for the past 25 years
I've been using a small attachment of my own design for delicate
work. The waxer I use is the Giles, or "Precision" waxer. This has
been a very reliable waxer for years. Plus, it seems to be the least
expensive. The original box, tips and cord I bought 25 years ago.
I've replaced the innards with a much more reliable rheostat, but
that's another story. The original control unit was something that
resembled a piece of tin can sliding over a coil of bare wire.
You'll have many responses to you question suggesting wrapping wire
of some sort or another around the tip for delicate work. This works
alright, but all that wrapping and unwrapping can get to be a pain in
neck. I've also found that when it comes time to do some of the
delicate work, my tip is hot so I either have to fumble around with a
hot tip or wait till it cools off (enough so I won't have to risk
another burn) which interferes with my production for a time.
With my little gadget, all you have to do is slip it on the tip, do
your thing, slip it off and keep track of it till next time it's
needed. I've managed to keep track of mine for years. If anyone's
interested, I can be contacted directly for the next couple weeks and
I will send a photo and instructions to make your own.