Annealed 4140 for project = DIY hardening?

[Janderso]

I was able to exchange the Milwaukee bit.
Let's try this again.

 

[Janderso]

It worked fine. I think the bit was just poorly made.

 

[Janderso]

Idecided to add the 10/32 allen set screw with a brass tip on the end of the t slot chuck stops I’ve been working on.
I ended up heat treating my prototype this afternoon.
It went well, it is pretty tough now.
The next three will be done in series at the same time.