Doug, could you comment upon how much material can be removed before the need for recutting the engraving?
Rob:
Different types of engraving are cut at different depths and there is no 'standard answer' to your question.
People I know and associate with who refinish guns, never speak of "how much material can be removed" before a recut is required. Only when refinishing badly rusted guns is engraving and lettering removed
and most guys stay clear of guns in poor rusted condition such as those mentioned above.
People who use power tools to polish gun parts usually damage and remove a degree of lettering and engraving. People who polish gun parts by hand seldom, if ever, damage engraving or lettering.
Good gunsmiths stay off of the lettering and engraving during refinishing by hand and usually never have a need to recut lettering or engraving, only if the customer wants
changes or the engraving arrives in a damaged or rusted condition.
Best Regards,