[sol]

I have tried to use Corian for a number of parts.
As an anti-back lash nut it fails, too brittle, very difficult to thread and then it rapidly wears.
I have had good luck with it as a rail support in a panel cutter. I routed a cove in it and placed a rod of cold roll in the groove and it has held up for years..
This area is very humid and with Corian the seasonal shrink and swell of wood is avoided, but overall it is an odd combo of properties: soft, brittle, stable, heavy and waterproof.