Cutting Ring Stock To the Correct Size

Description


Measuring A Ring Blank
To get a proper ring fit, you must compensate for the thickness of the ring band when measuring the blank. Forcing the outside ends of the blank together for soldering compresses the inside circumference, making the ring smaller. To correct for this, multiple 3.14 by the thickness of the blank. Then, take that number and add to the length (inside circumference) before cutting it. If the ring band is wider than 4mm, add an extra 0.5mm.
United States &
Canadian Standard
Inside
Diameter inches
(mm)
Inside Circumference inches (mm)
4 .585 (14.86) 1.836 (46.5)
5 .618 (15.70) 1.941 (49.0)
6 .650 (16.51) 2.042 (51.5)
7 .683 (17.35) 2.146 (54.0)
8 .716 (18.19) 2.249 (56.6)
9 .748 (18.99) 2.350 (59.1)
10 .781 (19.84) 2.463 (61.6)
11 .814 (20.68) 2.567 (64.1)
12 .846 (21.41) 2.658 (67.3)