Copper stains on interior gelcoat

Sep 29, 2008
63
Hunter 37.5 Point Lookout, NY
Leaks got into the fiberglass bins in my Hunter 37.5 galley. Copper bottom teakettle sitting in that water all winter. Now a green ring. Does anyone know what will get it out without roughing up the gelcoat?
 
Mar 26, 2011
3,961
Corsair F-24 MK I Deale, MD
Leaks got into the fiberglass bins in my Hunter 37.5 galley. Copper bottom teakettle sitting in that water all winter. Now a green ring. Does anyone know what will get it out without roughing up the gelcoat?
Metal stains respond to acid (oxalic or hydrochloric). This will not harm gelcoat.