Alternative Artillery Barrel Fabrication

[sheepherder]

Originally Posted by SIGP2101

One Q. what method do you usually utilize to do 6 mm radius on the barrel flange. Do you do it on lathe or on the mill. How do you transit from taper into the radius.

That's hard to answer, as this barrel does not transit from the radius to the taper...The sight base thingie is straight (in profile)...but to mill the radius on this one, I used the rotary indexing head...180º is rounded; the two sides are straight...and I used a 1/4" 4-flute ball end mill to mill it...

...But on a 4" or 6" barrel, I have a tool bit ground to a semi-circle, and turn the radius...

As for going from the radius to the taper...I just eyeball it...