how to repair a kerr electromelt

All,
I just bought a Kerr electromelt 364 from ebay that was advertised to
be working, but when I unpacked it, a piece of broken nichrome wire
fell out of the crucible. I assume it broke away from the top of the
surrounding heating element. Assuming I am not able to return it, can
anyone tell me how the heating element is wired so that I can make a
mechanical splice?
Thanks in advance,
The Eternal Squire
Reply to
The Eternal Squire
Loading thread data ...
formatting link
Reply to
tim
The rest of the nichrome element will be brittle so you won't be able to splice it back together. You will need to shell out for a new element. Basically Nichrome, Kanthal etc. get brittle and oxidised once they have been heated up and are damn' near impossible to join reliably in that state.
Sorry :-(
Mark Rand RTFM
Reply to
Mark Rand
Aw.... that's not such a big deal! With an ohmmeter, a bit of fiddlin' with Ohm's Law, and just a FEW bucks, you can re-make the element easily.
McMaster and (I think) MSC both sell various gauges of nichrome wire, fairly inexpensively. I use it to built permanent ignitors for pyrotechnics. But I've also built coil elements for propane flame effect rigs, and replaced the element in my little Cerro-tru pot that we use for dip-casting copies of a master mold for epoxy encapsulation.
It basically just involves finding out and duplicating the resistance of the old element with the new wire. Then you coil the (annealed) nichrome wire around a suitable rod former as snug as you can get it. Then stretch the whole coil out to the correct 'reach' for the job. (careful! don't over-stretch it)
LLoyd
Reply to
Lloyd E. Sponenburgh
Seattle Pottery Supply will also make up an element pretty cheap. They will need info about the existing element, such as voltage and wattage. But if you have the length, voltage, and desired temperature they can make one up with that info too. ERS
Reply to
Eric R Snow
Thank you all for your responses. I have since tested the unit and found it to melt small quantities of silver, which is all I really wanted. I will keep your responses in case the unit does become unworkable.
Many thanks!
The Eternal Squire
Eric R Snow wrote:
Reply to
The Eternal Squire

PolyTech Forum website is not affiliated with any of the manufacturers or service providers discussed here. All logos and trade names are the property of their respective owners.