
A reader asked about the scribe lines I left showing on some carving recently. In seventeenth-century work, I find them running the gamut, from scribed on the face of a piece, such as the chest front above, to being barely if at all discernable. It is quite rare to not see some scribe lines somewhere on the piece…
In thinking about why the layout for the joinery is on the face of this stock, I have worked on the notion that it helps to transfer the layout from one rail to its mate, or one stile to its mate, etc. Thus hold two mating pieces edge-to-edge, and then transfer the lines right across the faces. Then carry them across the edges with a square and awl. And yet I can’t then explain why this chest (below, from the same shop as above) laid them out on the front face, and the inside face too…
While I have this file open, here is some carving from one of these chests, and its scribed layout is still visible on the face of the carving. Some of it is hard to pick out, but the margins, compass-work, and three vertical lines that divide the panel into four segments vertically…as well as the lines struck across the panel to locate the compass’ leg for centerpoints for arcs.

Back to the one that started this line of thought, here is a detail from the pews from Totnes, Devon. The scribed lines are faint, but there are three horizontal lines struck here; a centerline, and an upper & lower line to locate the arches of the motif.
There’s lots more, usually we find mortise gauge lines, alignment marks in the form of triangles and/or arrows, and chisel-and-gouge-cut marks to identify & dedicate mortises and tenons. I’m glad they left them there, it’s like a road map for me. Makes my job easier.