Your questions about the use of a Foredom flex shaft machine for use
with the Jump Ringer is a valid one.
If the $49. Harbor Freight flex shaft has a handpiece that is
exactly 1" in diameter and it also has an adjustable chuck rather
than a collet to hold the blade arbor, you can use it. However, these
Chinese machines have a reputation for being of poor quality and not
lasting very long. The Foredom, on the other hand, will last you a
lifetime given the proper care. Mine is 35 years old and runs like
Your Dremel is a well made machine. It has the necessary speed but
lacks the power. Even if it will fit the Jump Ringer system, you will
burn out its motor if used for cutting many heavy rings. In the long
run, your best bet is a Foredom model SR w/ #30 handpiece and foot
There are several copies of the Jump Ringer on the market. We are
the inventors and have been manufacturing and improving it for 25
years. None of the copies can match its quality, precision and
versatility. The system can later be expanded to produce oval,
square, triangle and diamond shaped rings. It will also produce
finger and toe rings. In addition, if your need for quantities of
jump rings increase in the future, it can be converted into a High
Production Jump Ringer.
The best advice I can give you is to not skimp on tools. Buy the
best you can afford. It pays in the long run.