回複：班長， 梁兄， Sanding problem: how to fix dark spots

來源: 於 2012-07-23 10:25:00 [舊帖] [給我悄悄話] 本文已被閱讀：次

dark spot may not be sanded, it depends on how it form, if it comes from dirty liquid like cat urine, it will not be sanded out, it will stay there forever