3/8", fingernail type.
I am using W-1 Drill Rod.
I have never done this before.
My research leaves me with some questions.
After I have created the groove in the drill rod, I think I need to go through the following to anneal and temper the tool.
1) Heat the business end until cherry red, should be demagnetized, then quench in water or oil.
2) When cool, lightly sand off any scaling. Then reheat the business end until yellow (first temper)
3) Finish Grinding to shape making sure the area at the grind does not get above yellow.
While I seem to get agreement on 1), I seem to get differences of opinion on 2 & 3.
Some say since it is already W tempered I don't need to. I've also been told to take it to straw color. I've also been told set it in an oven preheated to 300 degrees for an hour.
So I guess I have too much advice or erroneous advice. I am presently planning to do what is listed in point 2) and 3). Does anyone have any concern about the process I am following.
I am using W-1 Drill Rod.
I have never done this before.
My research leaves me with some questions.
After I have created the groove in the drill rod, I think I need to go through the following to anneal and temper the tool.
1) Heat the business end until cherry red, should be demagnetized, then quench in water or oil.
2) When cool, lightly sand off any scaling. Then reheat the business end until yellow (first temper)
3) Finish Grinding to shape making sure the area at the grind does not get above yellow.
While I seem to get agreement on 1), I seem to get differences of opinion on 2 & 3.
Some say since it is already W tempered I don't need to. I've also been told to take it to straw color. I've also been told set it in an oven preheated to 300 degrees for an hour.
So I guess I have too much advice or erroneous advice. I am presently planning to do what is listed in point 2) and 3). Does anyone have any concern about the process I am following.