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Jump Ringer System

More expensive and a little more heavy duty than the Koil Kutter, the Jump Ringer System is the choice of professional.

Available from Connie Fox and the Rio Grande catalog.

Connie Fox has written up directions for cutting jump rings using the Jump Ringer System here:

http://www.conniefox.com/Supplies/JumpRinger1.htm

Jump Ringer Mandrels

The mandrels that come with The Jump Ringer System and imperial, and not metric.  The actual measurements are listed below.

Inch Nom mm Fraction Actual mm
.063 1.5 1/16 1.60
.078 2.0 5/64 1.98
.094 2.5 3/32 2.39
.125 3.0 1/8 3.18
.141 3.5 9/64 3.58
.156 4.0 5/32 3.96
.172 4.5 11/64 4.37
.188 5.0 3/16 4.78
.219 5.5 7/32 5.56
.234 6.0 15/64 5.94
.281 7.0 9/32 7.14
.313 8.0 5/16 7.95
.359 9.0 23/64 9.12
.391 10.0 25/64 9.93
.438 11.0 7/16 11.13
.469 12.0 15/32 11.91
 
     


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