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Machine Work - page 3

 

Time to change the tool bit again. Let's go to a finishing mill.

 

Clear some of the chips away ...

 

Sneak up on the line with the finishing mill ... you see that it's "slicing" more than creating chips.

 

And the sort of cut it makes is visible on the wall of the channel.

 

 

Must prepare the mating surfaces that this part will meet. Here is the underside of the billet receiver.

 

 

And the billet part we're making gets trimmed to make it flat with the bottom of the receiver when in place. We'll mill to the scribed line. The smoke is the tool bit cooling lubricant flashing off the hot tool. The balance is critical. Just alittle too fast (which makes too hot) and you've ruined the tool bit.

 

Yes. I sneaked in a front bevel and some fluting lines. It would take forever to show everything. What are the flutes for? Just to make it the rifle "go faster". ;?)

Are we there yet?

Page 4