New Ball Grip Belt Knife

[chipper]

Very nice.
I know I would do a lot more in O1 if I could simply learn how to drill that stuff. I've tried everything from using masonary bits to drilling hot. Nothing works. I have to hand it to you, You are truly a professional.

Regards
Loyd Shindelbower

 

[LRB]

yep, drilling it can be a problem if it is ever heated. I do all mine before it gets exposed to heat. 01 air hardens just enough to cause problems, if it gets any real heat. It can be re-softened if you have the means to sphereroidize anneal it. That requires an oven with timed controls. Common annealling still leaves it a bit tough to drill. When you get PG 01, it has been sphereroidized. The carbon particles are little spheres, and saws, drills, ect. just slide by them in contact, removeing the metal easily, but if they get re-heated, they change into ragged carbides and destroy anything softer. Have you tried carbide bits? Not the masonary types, but gunsmith, or machinists grade. They are expensive, and I had to use one a few years ago, but it worked. It did not last though. It was a standard shaped twist drill, only in carbide. The spade types last longer, if you don't break them.

 

[chipper]

I'll go back to carbide. I had a setup at work and went through like 3 bits that exploded and rained me with little hot parts. I quickly went back to standard bits and complaining. I re-visit the carbide and see how it goes.

Thanks again.

Regards
Loyd

 

[davy]

Where do you get the spade type carbide bits Wick? Seems a feller could use one or three of them things once in a good while if he was makin knives outta O1! :hmm: :hatsoff:

Davy

 

[LRB]

Brownell's has some, and ENCO. Seems like I bought one from Enco.

 

[davy]

Cool .. thanx Wick .. your tha man! :thumbsup:

Davy

 

[LRB]

Davy, if you go into ENCO, be sure and read what each carbide drill is made to do. Oddly enough, some are not mean't for hard metals. Whatever I bought was. It lasted for 9 holes through 3/32" HT'd 01.