Purfling Marker — Lutherie Encyclopedia

Purfling MarkerType: toolA scribing gauge that marks the precise inset distance for purfling channels on guitar tops and backs.## Description A purfling marker is a marking gauge designed to scribe a reference line at a consistent distance from the edge of a guitar top or back plate. It consists of a fence or guide that follows the instrument edge and a sharp scribing point or wheel that scratches a line into the wood surface. The distance from the fence to the scriber is adjustable, typically between 2mm and 8mm, to accommodate different purfling inset distances. ## Use in Lutherie Before cutting the purfling channel, the luthier uses the purfling marker to scribe a visible guideline on the plate surface. This line establishes the exact position of the outer edge of the purfling channel and serves as a reference for the purfling cutter. Accuracy at this stage is essential because any wavering in the scribe line translates directly into a visible defect in the finished instrument. The marker is used on both the top and back plates, and sometimes on the sides for side purfling. ## Selection Guide Many luthiers make their own purfling markers from a small block of hardwood with an embedded screw or pin. Commercial options are available from Stewart-MacDonald and LMI. The most important feature is a smooth-riding fence that follows the plate edge without catching. The scribing point should be sharp enough to leave a clear line without tearing the wood. Budget 10 to 30 dollars for a commercial marker, or near zero if you make your own. ## Tips - Set the marker on a flat surface and verify the inset dist…