"quite helpful.  I needed this graphic to explain to someone the differences between different set screws.  HIT THE SPOT!"

"Planned obsolescence is a miserable excuse for design and material selection.  I'd like to see a return to cobblers, others have noted, armed with new tools to repair and rebuild rather than discard.  The damned PU midsole material performs well, for a time, then degenerates, making the whole shoe trash.  This discussion triggered a swell in my mind that I have to excuse myself to evaluate, it may solve 30% of this problem......."