How to avoid edge blowout when placing wood screws
Step-by-step techniques to prevent plywood edge split-outs, weak joints, and ugly screw exits in woodworking builds.
January 2026
Edge blowout usually comes from three causes: screws too close to edges, diameter too large for the material, or no pilot hole in brittle stock.
Increase edge distance whenever possible. Even a small shift inward can dramatically reduce cracking in plywood and hardwood strips.
Pre-drill pilot holes for edge fastening, especially on dense woods or thin ply. Pilot holes reduce driving force and let threads cut cleanly instead of wedging fibers apart.
Use staggered screw lines when fastening long seams. If a joint still looks risky, redesign with a cleat or backing strip instead of forcing larger screws into weak edges.