02-15-2021, 01:26 PM
contact cleaning involves first 90% alcohol.
If still a problem. an ink eraser or 600 grit wet sandpaper will work, then clean with the alcohol. I"ve also used toothpaste and a small toothbrush in a pinch.
If still a problem. an ink eraser or 600 grit wet sandpaper will work, then clean with the alcohol. I"ve also used toothpaste and a small toothbrush in a pinch.