Another fun homebrew map! As these are becoming more and more common I figured I'd lay out some of the process. The client usually provides a copy of their map, usually from one of the free cartography websites or photos of a handdrawn map. From that I build a draft (sort of like a blueprint for the leather map). Occasionally I'm able to hand draw my own version of the map as part of the drafting process but that takes several hours so I'm not able to do it all the time.
The client and I go back and forth over the draft a few times to fix any errors, fine-tune image placement, mark special locations, etc. The draft itself isn't all that much to look at since it's just meant to inform how the map will be carved.
Once the draft is approve it gets transferred onto the leather and, after it's been cased, I get to carving. That's a lengthy process I've gone into in older posts so I won't do the step-by-step here.
Once it's carved I do the staining (more arcane craftsmenship) and when that's all cured it gets stitched down to some 1/4" MDF to keep it flat and sturdy. The whole process could probably be done in 3-4 days at the absolute fastest but since I'm usually juggling multiple orders most maps ship within 1-2 weeks of purchase.