When coupled to the frame, the clamp and axle assembly is freely rotatable, and this free rotation automatically aligns {HEAD ~ the length} of the edge of the blade with {TAIL ~ the surface} of a whetstone 
with
When coupled to the frame , the clamp and axle assembly is freely rotatable , and this free rotation automatically aligns { HEAD ~ the length } of the edge of the blade with { TAIL ~ the surface } of a whetstone
OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH HEAD HEAD HEAD HEAD HEAD HEAD OTH OTH OTH OTH OTH OTH REL TAIL TAIL TAIL TAIL TAIL TAIL OTH OTH OTH