No Shapers Marks

How do you place fin marks on a board but not have them show once the board is complete? Is there some sort of magic eraser that I’ve been missing?

Most of the time, your “dot” or 3–4" line will show only if the dot is to the rear of the box or plug.  If marked and routed right the dot will be removed when you rout for the box. Otherwise when you install the fin in the plug or box the fin should cover the dot.  So you are talking about something that can’t or at least shouldn’t be seen anyway.

Hi; the trick is to use a 2H pencil. Do only the dots.