WTB HSS Blanks - 1/2", mostly

[pontiac428]

And that Tantung G came in today!

 

[woodchucker]

bragger.. you have a big one.

 

[woodchucker]

And that Tantung G came in today!

View attachment 506061

do not quench it when shaping it.

 

[pontiac428]

do not quench it when shaping it.

Good advice. I might have figured it out the hard way if you hadn't said something.

 

[woodchucker]

Good advice. I might have figured it out the hard way if you hadn't said something.

I empty my pot, so I don't do something stupid. It supposedly fractures it. All the data sheets say not to quench or cool quickly.

edit: Although I do believe you can use flood coolant, as long as you start before it's hot. But I could be mistaken. I don't use flood using these. Only oil. and I don't have flood, only mist.

 

[pontiac428]

I empty my pot, so I don't do something stupid. It supposedly fractures it. All the data sheets say not to quench or cool quickly.

edit: Although I do believe you can use flood coolant, as long as you start before it's hot. But I could be mistaken. I don't use flood using these. Only oil. and I don't have flood, only mist.

When I grind lathe bits, I put a finger on the stock while I work so I can feel it getting warm. Then I go do something else while it air cools, and grind a bit more. It sounds tedious, but it's not too hard to do when I'm tinkering and tidying. It's a bigger hassle to remove hot work from the tool grinder, quench, and re-load in the fixture. I try to keep HSS at "straw" color and avoid any sign of blue. It's doable with the right stones.

 

[woodchucker]

I don't use a fixture. I just free hand it, mostly. On occasion I will use my surface grinder.

 

[Pevehouse]

And that Tantung G came in today!

View attachment 506061

I have some tantung parting blades as well

 

[woodchucker]

I have some tantung parting blades as well

That would be great.

 

[verbotenwhisky]

bragger.. you have a big one.

Well that didn't sound right....