my shop made Fly Cutter

[Investigator]

My plans changed from where I began for a fly cutter. This one is pretty simple. I used the largest 4140 round bar I had, which was just over 2". I turned a shaft down to 3/4" to use in an ER32 Collet, and then cleaned up the outside. After turning, I mounted it in the mill and cut a slot for an SCLCL boring bar. I milled a flat on the back and tapped two 1/4"-28tpi holes for mounting screws. I took the boring bar and milled a recess into the back for the screws to bottom into, thinking that if they work loose as it turns the bar won't fly out. I should be able to cut about 6" width if needed. It's pretty heavy which I hope won't be a problem, and might even make it smoother cutting.


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[mikey]

The obvious question ... how does it work?

 

[Investigator]

The obvious question ... how does it work?

I will let you know. I got it finished just in time to head out for some family time. I'm going to have to do a little reading on speeds for such a critter too.

 

[jdedmon91]

I have one I made like that but it uses a tool holder that uses the sides of an CNMG inserts


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[Investigator]

I have one of those insert holders also. I was concerned the cutting tip might not extend low enough so I chose this one. How well do you like the one you made?

 

[Ulma Doctor]

i'll be interested to see how it works too! keep us posted!
nice work

 

[Tinkertoy1941]

Cut your slot on an angle, it will solve clearance problems!

 

[Investigator]

Cut your slot on an angle, it will solve clearance problems!

Yeah, I thought of that, but with what I had planned I cut the slot flat/straight. The bar I have has built in clearance that way.