I was working with Blender before Inkscape and developed a material using Blend that would take the most distant part from the camera and make that black and the closest and make that white and the rest of the distances divided by 256 for grays.
It has been a while and a few upgrades now so I have some difficulty getting it working right, but for 3d engraves of 3d models it is the key.
One point of criticism I would make however is that you put the greatest black all the way to the back of the skull where most cannot be seen so the resolution of what you can see is much less where you want the greatest resolution (around the teeth as example) so the pure white is as small as possible even messing with the gradient some to get the most resolution at the front.
Your eye will see variation in white better than black, so when you think it is all black the will be more resolution than you can see, while the reverse will be the case near white,
So I’m still working at it about 8 hours of work into this so far. I don’t think it’s a case of the file i’m making anymore but more the settings and materials I use.
Well, I’m happy to say that I think i’ve found a way to make consistent quality files and how to engrave them. I’ll make a video in the next few weeks and share it here once it’s up =)
I will anxiously await this new post of yours! And while I wait I better read more about blender. The GF is a great machine but I have always felt that it becomes more powerful with a great handle in depth maps and 3D engraving.
As Inkscape vector file would work best with really sharp edges even if you kicked out a raster to actually engrave, but while I really like it for something like that sign, it does not get you to the Blender gray elevation for squishy stuff,
More information on how to use Blender to create non-destructive, editable box templates. Using a free addon, you can quickly create interesting boxes with fully adjustable kerf widths and material thickness. So, for instance, you could create the same box for two different thicknesses of wood. Also keep in mind, the boxes can be quite complex as well (not just a typical 6 sided box).