So with 3d printing making a lithograph from image is fairly easy just import your image into cura and print. How could I achieve the same result but machine it?
@Jim_Squirrel this is my process.
Lay out the design in something like CamBam. You’ll do a waterline roughing cut to remove the big stuff. Follow with a second finishing cut.
Process one - square endmill
Process two - ball nose
This is how I’d do it at least, others may have better suggestions.
There was a link in the CamBam tutorials that showed 2.5D milling, where I learned to do it.
Vetric has some pretty good tutorials on YouTube about how to create a lithophane and as @Brandon_Satterfield said most people are using a flat bottom endmill for bulk material removal and then coming back with a ball nose endmill of small diameter with a finish pass… The amount of step over per pass will determine the amount of detail you will get alot of the toutorials call for 4%-12% of the tool diameter stepover per pass.