Any machinists here that use tool steel or.....

[Cranky]

Carboloy cutting bits? Yeah....gotta grind them to what you want.

 

[padam]

That’s the way we used to do it…

I still have boxes of them.

 

[ESOXER]

I lived in machine shop in high-school, we were required to make our own. Teacher looked at my first one, threw it across the shop and walked away. I did better next time.

 

[Cranky]

That’s the way we used to do it…

I still have boxes of them.

They still have their usefulness today imo....I may be wrong since I've been out of the machinist trade for nearly 20 years. The last time I ground a tool it was to reclaim a center for a pump shaft and it was tool steel and the shaft was 17-4 PH. Gotta turn that pretty slowly or kill the tool.

 

[Cranky]

I lived in machine shop in high-school, we were required to make our own. Teacher looked at my first one, threw it across the shop and walked away. I did better next time.

Wish my high school had a machine shop. It wasn't until my senior year that we got a metal shop and the instructor wasn't all that good. He wasn't bad with sheet metal work though looking back. At least he knew how to strike up an arc with a stick machine but that was it. He couldn't lay a bead without it looking like scrambled eggs....but it did peek my interest to learn more about welding over the years. Also looking back, there were no sheet metal breaks or shearers.

 

[padam]

They still have their usefulness today imo....I may be wrong since I've been out of the machinist trade for nearly 20 years. The last time I ground a tool it was to reclaim a center for a pump shaft and it was tool steel and the shaft was 17-4 PH. Gotta turn that pretty slowly or kill the tool.

17-4 PH is one of the few stainless grades I work with now. It’s in the high 40s Rc when we get it. Very tough. It tears up our inserted cutters.

 

[Cranky]

17-4 PH is one of the few stainless grades I work with now. It’s in the high 40s Rc when we get it. Very tough. It tears up our inserted cutters.

Just have to spool down the rpm a bit and not take such a big bite. I liked machining it as it gave me some 'butt time' lol but of course we were using inserted tooling on it...

 

[ESOXER]

Wish my high school had a machine shop. It wasn't until my senior year that we got a metal shop and the instructor wasn't all that good. He wasn't bad with sheet metal work though looking back. At least he knew how to strike up an arc with a stick machine but that was it. He couldn't lay a bead without it looking like scrambled eggs....but it did peek my interest to learn more about welding over the years. Also looking back, there were no sheet metal breaks or shearers.

Jeez, we started in 7th grade. We had sheet metal, lathes, milling machines and CNC just started in my senior year. I refused to use it but some kid made a bowtie for his truck, I laughed at the computer crap and the bowtie. My dad made a living running CNC, made thousands of Smith and Wesson M&Ps.

 

[padam]

Just have to spool down the rpm a bit and not take such a big bite. I liked machining it as it gave me some 'butt time' lol but of course we were using inserted tooling on it...

Spooling down is against my religion. But yes it has to be done with that stuff.
Carbide end mills cut it better than inserted cutters, I think because of the sharper edges.