I have two old soldering stations with burned out elements I want to rewind. ( One is an old ungar they quit making ages ago but it was a good iron ) I found some #30 Nikrothal 80-20 wire cheap on eBay which appears to be the same length and resistance as the original. I just want to know what kind of paint or insulating material to use to keep the wire from shorting to the metal barrel or to neighboring turns ( They are both 24 volt transformer units ). I took one elemant apart already and the coil is sandwiched between to metal tubes about .02" apart.
Nichrome winding insulation question
Dec 13, 2008
2 Replies
I am sure that you will receive replies from folks considerably more familiar with heater construction than myself, but FWIW, please see how I worked with soldering iron heaters to build an SMT hot air rework tool at:
formatting link
I found that windings separated by ceramic spacers was typical in units that I disassembled and I used refractory cement in my finished unit to provide structural strength and thermal conductivity and thermal insulation in appropriate places.
Michael
I forgot to mention that the internal insulation in all of the heaters I cannibalized was mica -- in discs, sheets, bars, etc. Ceramics made up the rest of the structural material. When inserted into the metal tube, the spacers prevented any contact with heater wire.
Michael
Join the Discussion
Have something to add? Share your thoughts — no account required.
Didn't find your answer?
Ask the community — no account required