APPLYING VARNISH TO EPIGLASS EPOXY OR OTHER CLEAR EPOXY RESINS
1. After applying epoxy allow to cure for a minimum of 3-7 days. In cool temperatures allow 7 days clear epoxies to fully cure. Scrub Epiglass Epoxy with a stiff brush using soap and water. Rinse with fresh water to remove soap residue. (SANDING WILL NOT REMOVE SURFACE CONTAMINATION).
2. Wet sand the surface using 120-150-grit wet-or-dry sand paper Remove sanding residue by wiping the surface with a rag that has been dampened with Fiberglass Solvent Wash 202. Wipe only small areas at a time and change rags frequently.
3. Apply 5-6 coats of Interlux Perfection Varnish YVA853, Schooner 96, Goldspar Clear 95 or Goldspar Satin 60. Sand in between coats with 220-320 grit wet-or-dry sandpaper. Remove sanding residue with a cloth that has been dampened with Interlux Reducing Solvent 2333N.
Original article from Interlux