a few hundred degrees is often enough to free a stuck bolt or dowel pin, I can see it changing diameter by a a few thousandths.
I think he means the ball itself, does it shrink or expand??
IMG_1087 by Oliver Sudden, on FlickrI was mostly curious about how much the temperature of the mold changes things. The basic reason for the project was for work training, I've recently been assigned to operating a cnc machine and I needed something for a project to learn programing on.I made this ball mold for my cannon, the bore is 1 3/4” so I made the mold at 1.750” knowing that the lead would shrink. Worked out well with about .005” clearance. As cheap as 54 calibre molds are making one so common would be for the exercise of doing it.
aluminum.
Nicely done Phil - Your mold looks well made! I would love to see the cherry.I made this ball mold for my cannon, the bore is 1 3/4” so I made the mold at 1.750” knowing that the lead would shrink. Worked out well with about .005” clearance. As cheap as 54 calibre molds are making one so common would be for the exercise of doing it.
