On Nov 30, 8:26 pm, "dadiOH" wrote:
dpb wrote:
Not sure what OP is calling a "star" drive

The end of the mandrel is shaped rather like an asterisk. It's maybe
3/4 - 1" in diameter and the blade has a matching hole that fits over
it. Belt turns pully, pully turns mandrel, mandrel (star) turns
blades.

-- could be that it's
failing there because it was designed as the weak point.

Nope. It isn't weak.

--

dadiOH
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mandrel is shaped rather like an asterisk...the blade has a
matching hole

But the OP said the *pully* mates with the star shapped shaft, not the
blade.