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| 1. None of the parts of the profiler are made of
brass. While brass has an attractive cosmetic appearance, it cannot
be treated to attain the hardness of steel and maintain its measurements
with constant use. |
| 2. The base of my profiler is a one piece aluminum
casting. The casting is then ground to precise flatness on the bottom
surface. This precise bottom surface serves as a reference plate from
which all of the grinding for the shapes on top of the casting. The
casting has shapes on the top side of the base that will be precision
ground to accommodate the cutting head shaft, the cane barrel slots,
the cam shaft slots, the locating holes for the cutting head shaft,
and precisely ground flat platforms in places where precision fittings
can be attached to check and adjust critical parts. The casting is
hard anodized which means that a hard crust is chemically added to
the aluminum casting. This crust is the equivalent of hardened steel
and shows no wear in the slots for the cane barrel and the cam shaft
in over twenty years of use. In addition, all of the adjustable screw
holes in the aluminum casting are lined with hardened steel coils
(heli-coils) that match the threads of the screws. |
| 3. The cutting head is made in two pieces - a hinge
and a cutting head. Both elements are massive and fit closely together.
The material is heat treated stainless steel. The head containing
the blade is adjustable so that the special tracing wheel that rides
on the cam is precisely located to ride down the longitudinal center
of the cam. The geometry of the adjustments insure that the spine
of each half of the profiled piece match when the cane is turned around
in profiling. These adjustments are done in the manufacture of the
cutting head, but they can be checked with the special equipment that
is furnished. |
| 4 The cutting head rides on a precision ground
steel shaft that is precisely parallel to the base casting. The cutting
head shaft hinge holes are lined with hardened drill bushings that
are pressed in place and ground to fit the cutting head shaft. In
the event that looseness develops in the cutting head/shaft connection,
new bushings can be pressed and fitted into the cutting head. However,
in twenty years of use, my profiler cutting head shows no signs of
looseness when riding on its shaft. |
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