I just stripped, sanded, stained & then applied fast-drying oil-based polyurethane to my hardwood table. All went well until I sanded the second coat of polyurethane with 220 grit sandpaper. The scratches did not cover with the third coat & streaks are visible.
Should I sand well now with 220 grit sandpaper & apply another couple coats of poly? I hope I don't have to strip it again!