Deck question- plywood needed for screws?

[pelican]

Originally Posted by Islandtrader

Plywood is good cheap insurance...jmho

done in the method i described - removing the core,filling with epoxy - you can use threaded "machine" screws - example:if you want to use a 1/4 - 20 screw,just drill the epoxy 3/16",the screw will thread the epoxy.that screw will never loosen,nor will it vibrate out - however,need to remove,it will back out and tighten again - doesn't allways work that way with wood...