I'm going to drill into my kettle. I'd like to be able to directly screw in a 1/2" MPT Thermowell... I have a step bit that I use to drill holes into metal, but how do I drill it to accept the threads?
Thanks!
Thanks!
I'm going to drill into my kettle. I'd like to be able to directly screw in a 1/2" MPT Thermowell... I have a step bit that I use to drill holes into metal, but how do I drill it to accept the threads?
Thanks!
You'd use a thread tap, which cuts the threads as you screw it into the hole. But I think most stainless steel pots are too thin to provide secure threads for a 1/2" or thereabouts fitting...
Measure the outside diameter of about halfway up the thread then subtract 2x the hight of the thread. That will give you the size of hole you will need.
You use a tap in a tap holder and carefully cut the threads in. Look up youtube on how to do it properly.
I will echo the comment that the pot is too thin for threads for a thermowell. You can cut the threads and the fitting will thread in but it won't make a good seal. You either need a coupling welded or soldered in or a weldless assembly that can make a secure mechanical seal against a gasket. Do you have photos of the thermowell that's on your pot now?
I'm not a machinist,
but you stayed at a Holiday Inn Express?
I'm not a machinist
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