Alignment cones 2x2.75 x30°

[Frank S]

I am needing to bore the 1" plates I am making for my folding break much larger than I was previously planning on doing .
The boring head for the mill was doing a fine job but I am too impatient to bore at a .005 to .010" at a time through the 2" of hard steel in order to take the bore form 2.300 out to 2.625" this is why I made the boring bar yesterday and today after we got back from town started making a pair of alignment cones. these will be used to center the boring bar to the bores in the plates then I will tack weld the stabilizer bearings to the plates. This will be a little tricky as I need to set this up in the mill get everything square then tack the bearing stabilizers in place to insure the boring bar is perfectly perpendicular to the plates. I will probably do a mock set up on top of a sheet of steel on the mill table to protect it


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