Aztec GEM II Manual page 10

Cutting disc makes little progress in cutting
through ring (Continued)
Locking screw unwinds during operation
1. How many rings will a cutting disc cut
through?
2. Why is it necessary when cutting through
hard metals to make a cut half way
through the ring on one side and then
all the way through in a position directly
opposite the first cut?
9
Carbide cutting disc (Ref. A-Z 224)
If cutting disc is worn down to plastic
spacers, replace disc.
Batteries have been loaded into battery
cassette incorrectly. Re-load batteries into
cassette in the correct order and make sure
the arrows on the battery cassette and the
GEM II unit are aligned.
F.A.Q's
A carbide disc acting on a soft metal, i.e.
Gold wedding ring approximately 4mm
wide by 1mm thick will cut through 10-15
rings.
A diamond disc acting on a hard metal, i.e.
steel 4mm wide by 1mm thick would be
capable of cutting through approximately 6
rings allowing for the fact that a hard metal
requires cutting in 2 separate locations on
the ring.
N.B. The cutting surface of the ring must be kept as cool as pos-
sible to preserve the diamond grit on the cutting edge of the disc.
This is achieved by cutting for 3 or 4 seconds, pausing for a second
and repeating the process.
Rings made of hard metals when cut
through tend to close up trapping the
cutting disc. This is due to the high tensile
strength in the metal. Partially cutting
through a ring significantly reduces the ten-
sion in the ring so that when the ring is cut
through on the opposing side to the first cut
the ring won't collapse in on itself and trap
the cutting disc.
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