How to screw into the edge of plywood?

Drill a hole and glue in a dowel, then drive your screw into that.

Make the dowel as large as you can.

-- Gary, East TX -- The longest journey begins with a single step.

Use confirmat screws, they’re designed for that purpose.
You’ll need to pre-drill for them, but they work well.
Hafele sells them.

-- www.DovetailDesignsNJ.com

the dowel works well for a tougher joint. I think the secret is to not overtighten it. Definately predrill and drive the screw by hand…..Trya screw with a big bite as well like a sheet rock screw or similar

-- Soli Deo Gloria

Yes, the dowel idea sounds good. What about screwing into composition wood or particle board?

Drill a pilot hole and squirt in cyanoacrylate glue. It will provide a good grip.

-- WOOD/DON (...one has the right to ones opinion but not the right to ones own facts...)

I don’t know if GaryK was referring to drilling a hole into the edge and inserting a dowel or drilling from the side and inserting a dowel. For me, the best way, if the project allows it, is to drill through from the side insert the dowel, drill a pilot hole and screw into the side of the dowel rather than the end grain. Either way will work but you get a lot more strength inserting the dowel so that you aren’t screwing into the end grain of the dowel.

JimC

And be sure that you’re screwing perpendicular to the grain of the dowel too.

-- Eric at http://adventuresinwoodworking.com

Yes, dowel from the side, how far in from the edge should it be? I imagine a half inch or more.