A1 - The Ratchet Wheel
Copyright 2011 by James P. Riser
The ratchet wheel begins with the grinding of a new
fly cutter. The projection left from cutting off the previous
fly cutter is first ground away. The hss drill blank is then ground
just slightly past halfway for clearance purposes. The grinding
is again done on my Gortom 265 bench top grinder.
The angle is next set to 60 degrees.
The angle on the end is ground then clearance on all
sides of the cutter. Clearance is critical.
After clearances have been ground, the cutter now looks
like this and is ready to be ground off of the end of the hss
drill blank rod. The new fly cutter gets mounted in the wheel
engine cutter arbor.
The brass ratchet wheel blanks are punched out. 
An emergency collet is modified to securely hold the
brass blank for hole drilling and sizing.
After final sizing, the blanks are ready to be cut.
They are cut on
my Chronos Wheel Engine. 
A completed ratchet wheel looks like this. 
More to come as I get time.
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