How to secure screws in plywood going with grain??

gbopp wrote:

Jim@HiTek wrote:
What I'd do is head to a lumber store and get a length of hardwood dowel twice the diameter of the screw I intended to use.
This all depends on how thick the plywood edge you're drilling into is.

This was my first thought. But the epoxy may be worth trying, especially if you can use longer screws.
(I can see the image, it's a cow standing in a field. :))