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