Made some walnut placemats for a customer and 1 week after she picked them up she was calling about rings left from cups. Finishng schedule was:
2 thin coats BLO each side
Sealcoat 50:50 with DNA
4-5 coats Target EM 6000 semigloss

I told her that the white rings should go away but I know that isn't a fix. I was wondering about water Rings with water borne lacquer but I couldn't find any answers online specific for water borne so I went ahead with it. Probably going to cost me! Would respraying the items with Target conversion varnish or polycarbonate solve the ring issue or do I need to try something different. I like the water borne since I can spray it but not against going another route to fix this problem. Any help is appreciated.