Sanding – System Three Resins, Inc.

Sanding guidelines for applying multiple coats of product.
- Recoating or applying multiple coats of one of our 2:1 epoxy products (General Purpose, SilverTip, Clear Coat, MirrorCoat, etc.) can be done without sanding if done within 72 hours of the previous coat. Beyond 72 hours, sand the previous coat with no higher than 120 grit sand paper to ensure the next coat adheres or properly levels out.
- For S-1 Sealer and Cold Cure products, the recoat window is 24 hours.
- For all System Three adhesives (Quick Cure, T-88, Gel Magic, MetlWeld, etc.) sand in between coats for best adhesion if a second application is desired. Please follow all instructions on substrate surface preparation prior to applying System Three adhesives.
- For fairing compounds, putty, and pastes, please allow to fully cure then abrade or sand if additional product is to be applied.
Sanding guidelines for applying one System Three product over another
- Recoating or applying one product on top of another for most of our 2:1 epoxies (General Purpose, SilverTip, Clear Coat, MirrorCoat, RotFix, etc.) can be done without sanding if done within 72 hours of the previous coat or product. Beyond that, sand the previous coat or product with 120-150 grit sandpaper to ensure the next layer adheres to the previous one.
- For S-1 Sealer and Cold Cure products, sanding must be done after 24 hours.
- For all System Three adhesives (Quick Cure, T-88, Gel Magic, MetlWeld, etc.) allow an overnight cure, sand the surface and apply more product.
- For QuikFair, allow to harden 4-6 hours then sand with 120-150 grit paper and apply more QuickFair.
- For SculpWood Putty allow to harden 4-6 hours then sand with 120-150 grit paper. Apply RotFix Epoxy then while wet, add more SculpWood Putty.
- For SculpWood Paste allow to harden 6-8 hours then sand with 120-150 grit paper and apply more SculpWood Paste.