grading papers and corkscrewing around

It is the tail end of the semester where I teach, so I am finishing up student grades and am looking forward to a summer of cavorting around, hunting for corkscrews, and traveling a bit.
 
A couple of corkscrews have arrived in the mail.  Most notably a clough power cone.  A really ingenious piece, however, it is at the same time so simple mechanically…
 
Off to play 9 holes!!!
 
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