Louis Ohland wrote:
I'm trying to turn a front sight base that will fit a tapered
barrel. After some hand-to-calculator fighting, I came out with a 1/2
degree per side angle. Start of the band is @.610, the end is @.630,
looking at tapered end mills in Wholesale tool, Grainger, KBC, Enco,
and others shows a decent range of prices, but the corker seems to be
the front diameter. Stock tapered end mill tips are in common sizes,
like 3/8, 1/2, 5/8 and 3/4.

Thing is, moving the band rearward gets the band into the diameter of
.623, but the band will be over an inch and a half from the muzzle.

Looking at the iGaging digital protractor, the accuracy is listed as
.2 degrees. Resolution is listed as .05 degrees, but look at the
accuracy and we're well into half the value of the desired angle.

How can I set my compound for boring? Angle plates? Adjustable angle?

Chuck the barrel up muzzle to the headstock - better yet use centers .
Mount an indicator to the compound and adjust until the indicator stays
steady when you crank it in and out .

--
Snag
Learning keeps
you young !