Hello fellow hachure enthusiasts!
I developed a nice hand drawn technique, the result of which falls somewhere between the overly generalized caterpillars and very detailed Lehmann methods. I have attached an example. It is a work in progress, so I would be happy to receive some critique on the overall design….
I began by printing a slope classified DEM and tracing the aspect angles as a general guide in pencil. Then I developed a set of faux hachured mountains on a different page and, by moving the tracing paper back and forth between the DEM and the faux mountains, I matched the mountain I thought suited the slope and aspect best and traced it for the final map. It is wise to use a VERY fine crowquill pen, this way you can get varying widths in each hachure and don’t develop any unsightly blobs of ink. Also, check out razornole’s Nez Perce maps, I drew on his methods, but left Illy out of the process (Sorry Illy and thanks again Kru!).
The final product is an extremely generalized rendering of the topography (not nearly as skillful as something Lehmann himself would have drawn), but I think it, at very least, is akin to something this era would have produced. And, I must happily say, it has that really historic (kind of totally inaccurate and silly) look I don’t believe can be achieved through automated methods (please someone tell me I am wrong).
Anyway, for anyone who loves drawing and is looking for the real historic mapping experience, this is certainly a method to explore