gary wrote:

I already tried sheet metal screws but they just pulled out of the
particle board under normal "keyboarding".

Another thought - particle board is commonly used for counter tops and is
secured by screws up into the particle board, through angle brackets in the
lower cupboards. They withstand years of moisture, etc. Granted - they are
not subject to a drawer sliding, but I just honestly do not believe a well
mounted drawer slide is going to present a problem.

--

-Mike-