What tool for this??

[riversidedan]

making some 12L14 fly wheels and needing to know what tool Id use to smooth out what you see.........am thinking something in a round nose which Id have to make but not sure..........I tried a boring bar ata angle but didnt work out and did what your seeing on the inside surface.....or maybe I should have gouged the inside out first then drilled...

 

[C-Bag]

A ball turning fixture with round nose bit.

 

[riversidedan]

A ball turning fixture with round nose bit.

ok good so if able maybe you or someone can post a profile of what your refering too, I kinda got an idea but not sure....also thought about putting a 1/2 in . drill bit in a tool holder being the nose is round.

 

[Flyinfool]

Was the tip of your boring bar exactly on the spindle center line?
If you are trying to reces the back like the front is then it is just a normal boring operation. Trying to plung in a boring bar does not work well, You are better off doing a few facing cuts from the center out with the boring bar. If you try to go to fast or aggressive you will get a rough finish. Then do a final light pass on both the face and the bore to clean them up to size. Make sure your tool is sharpened properly.

 

[riversidedan]

ok will try that, but am thinking that B bar wont like those holes.............eeekkk

 

[MrWhoopee]

Definitely drill the holes after. It's hard to get a good finish on an interrupted cut. There will almost always be a "shadow" following the interruption.

 

[riversidedan]

too late now but the good news is I bought a 6x 1 3/4 12L14 bar for $14 so I can get a few pcs out of it, besides its good practice if I screw up........was gonna buy some online but the stinkin post price was almost as high as the product! eeekkkk

 

[riversidedan]

so I messed with a B bar to smooth things out and it worked great, the holes didnt matter......