Hello Ruslana There are several reasons for a circular saw blade to
Dull blade or missing teeth. You cannot tell whether a blade is
dull by feeling its teeth. The only way to tell if a blade is dull is
by trying a new one and seeing if it makes a difference. Premature
wear can be caused by running your flex shaft machine while inserting
or removing the blade from the slot in the steel top plate. If the
blade rubs on the steel it will become dull or lose teeth. It can also
be dulled by overheating. This can be eliminated by lubricating the
entire length of the coil where the cut will occur instead of
lubricating the blade. This ensures a constant supply of lubricant.
The blade’s temperature can also be held down by running your machine
at top speed, making your cut as quickly as possible and stopping the
motor as soon as the cut has been completed.
Soft wire. Metals such as copper, silver (especially pure) and
aluminum tend to smear if they are dead soft. Try using half hard
wire. You will see a marked difference. If you cannot buy half hard
wire, you can harden soft round wire by securely chucking it in your
#30 hand piece. While holding the hand piece horizontally in one hand,
hold the other end in a serrated parallel jaw pliers and exert a
slight pull. Start the motor slowly and gradually build up speed. You
will see the wire actually twisting (work hardening) but its shape
will not change because it’s round. If your wire is too heavy to use
the flex shaft you can accomplish the same thing with the Jump Ringer
If you want super smooth cut ends, try running your jump rings in a
small tumbler for about a half hour. They will not tangle because the
kerf (cut width) is less than the thickness of your wire.
If these suggestions do not solve your problem, please e-mail me
Ray Grossman Inc.
Manufacturers of Jump Ringer