Plywood Sanding Guide: Sanding Veneer Without Burn

Sanding Plywood Safely

The face veneer of standard hardwood plywood (like Red Oak or Birch) is incredibly thin – often just 0.5mm (1/50") thick. If you sand too aggressively with a random orbital sander, you will burn through the veneer, exposing the dark glue line beneath.

Sanding Protocol

1. Start with 150-Grit: Never use 80-grit or 100-grit on face veneers unless you are removing thick varnish. Start with 150-grit to clean up factory marks.
2. Light Pressure Only: Let the weight of the sander do the work. Do not push down. Keep the sander moving constantly; staying in one spot for even 5 seconds can burn through the veneer.
3. Finish with 220-Grit: Hand-sand the final pass with 220-grit paper wrapped around a soft sanding block, following the direction of the wood grain.