I am getting started trying to make some lithophanes, and I'm running into a few issues. I was hoping someone might be able to point me in the right direction.
I have a few questions.
How do I get rid of the milling marks?
How do I get rid of the little round pockets around the image?
How do I get rid of the "fuzzies" in the corners?
For the attached example, I used candlestone. I measured the thickness with a set of calipers, and the material was .195" thick. I used Vcarve desktop to flatten it down to .15" thick, using a 1/4" endmill.
Then, in PhotoVCarve I used a 1/8" ballnose bit to make a roughing pass, and then a 1/16" tapered ballnose for the finish pass.
The final pass ran at .1 inch max depth, 10% stepover with a distance between lines at .006. My feed rate on the finish pass was 50 ipm, with a plunge rate of 20. The material is only a small piece 2 x 3 1/2", there were 677 lines to mill.
The image had the background removed in Photoshop, and the resulting area was cleared in PhotoVCarve using the "Make Color Transparent" feature.
I am milling on an X carve, with the DeWalt 611 router to power it.
I've been using Vcarve Desktop at home, and have gotten satisfactory results in other wood projects, but this seems to require a little more tweaking.
Any help you can give me would be appreciated. Thanks!
- Mill marks and border