An elderly (very elderly!) friend of mine who still works in the shop every day
created the installer class for Corian. Several years later he called DuPont
to buy Corian direct. They asked if he had the class and was a licensed installer.
He told them no, but I created the class to train your installers. No amount
of explaining would change their minds. They insisted he take his own class
before they would sell him any product.

I however did have limited success with Corian. My first kitchen was in 1969.
I told the salesman that I had decades of experience, and despite not being
licensed to install Corian, I did know how to install it and was aware of most
of the quirks with installing. He agreed to sell me the Corian. The price was
about $60 less than the product with the installation. I'm doing a shower (now
retied and doing work for myself only) and vanity soon. I'll just do and end-run
on Dupont and buy Avonite or Dovae.

-Max