Hi all! I guess the title says it all: I have a number of maps that have a DEM file underneath that I usually created entirely by hand by drawing contour lines until my head nearly popped off. I spent innumerable hours on these things, and since my brother (the one I'm currently creating this map for!) recently purchased a 3D printer, I started wondering if I couldn't get some of them printed so I can actually touch the terrain I so painstakingly created!

One example of a DEM file, from my old Ostwyc map:
Uyli-8Xg.png

I already know there's a tool called Chitubox that will slice any 3D model for me so it's ready to be sent to the printer, but I don't know how to go from my raster file to a 3D model. Anyone has any pointers?