Should I Wet Sand or Dry Sand Resin-Coated Foam?

Wet Sanding: Cleaner and Safer

Wet sanding involves using water to lubricate the sanding surface, which helps suppress dust and reduce the build-up of static. This method is particularly recommended for resin-coated foam because it helps avoid airborne particles, making it a safer option for those sensitive to dust or working in confined spaces. You’ll also find that wet sanding reduces clogging of the abrasive material, resulting in a longer lifespan for your tools.

• Always use clean water and rinse your sanding block frequently.
• Wipe the foam dry between sanding stages to check your progress.

Dry Sanding: When Precision is Needed

Dry sanding allows for quick material removal and gives immediate feedback on the finish. It’s handy for small touch-ups or where water might interfere with adhesives or subsequent coatings. However, dry sanding will produce more fine dust, so always sand in a well-ventilated area and wear a suitable mask to protect yourself from particulates.

Tools and Tips for a Smooth Surface

Whether sanding wet or dry, a Foam Sanding Block is ideal. Its flexible core conforms to curves and contours, gently smoothing resin-coated foam without damaging the surface. For a final high-gloss result, consider using an epoxy resin polishing system after sanding.