F-holes and tuning
Drill small holes in F-hole area. Be very careful to not cross guide lines.
Use sharp knives to clean out F-holes.
Start at ends, removing "comma" areas at both ends.
Hold knife from underneath so that blade tip is visible at top.
Use a small utility knife ground to shape.
Chamfer inner edge except at "C" bout corners.
Dress "C" bout corners on outside
Tune to "F"
For next week, bring tag and summary sheet.
Note: "F" holes must be at least 6 mm at widest to permit insertion of sound post.