I have a post hole digger with some blunt TC tips, brazed to spring steel tangs.
I may have trouble replacing these as the machine is pretty old. I have contacted the company that bought out the company that...like I said it's old. Their setups have changed.
Similar ones are also rather expensive. If I buy them I have to rebuild the whole head on the auger, and it becomes a questionable exercise.
So. It occurred to me that I could delay the inevitable by detaching the TC tips and turning them around. They are flat plates maybe 3 mm thick and 16mm x 16mm (1/8 * 5/8 *5/8") square. Of course the back sides will have sharp edges and corners.
BUT. How much will the brazing affect the temper of the spring steel? - I do not know if these things are temepered, even, but I want to minimise the damage I do. - if they are tempered, obviously the damage from heating will be worse near the root of the tangs, not the tips. Any ideas on how to heat the tips to brazing temps, but keep the rest of the tang cool.
The tangs are 16 mm (5/8") round stock, 90mm (3 1/2") long.
I gather I don't have to worry too much about the tungsten.
Any help appreciated.
*******************************************************Sometimes in a workplace you find snot on the wall of the toilet cubicles. You feel "What sort of twisted child would do this?"....the internet seems full of them. It's very sad