I was getting frustrated with issues in V-carving projects, so I started working on some other projects that I wanted to get done for Christmas gifts.
I had watched several other videos and went through tutorials using various methods to get topo data into a 3d model for CNC use - but they all were either fairly old (with poor instructions) or very confusing. However, this weekend I finally found a process that works and was easy enough for me.
I used the rayshader R package (https://www.rayshader.com/) and some other ancillary tools to grab, process, and then export DEM data from USGS into an STL file that was then imported into VCarve Pro. It turned out pretty nice I think! I’ll try to add some more details about the process to this post later on as I have time.
This is one of the renders from the rayshader package, I did a few test renders to make sure the extents were good and to play with the Z scale.
The model is about 6.5" W x 8" H x .55" D and I used a 1" think piece of walnut stock.