[vger]

Routalot,

Nice work on the Ferrari emblem. What was your total machine time? Some years back I made a small lithophane and showed it to my wife.... she asked “can you make some of those of the family photo for Christmas presents?” So.... I learned that an 8” X 12” (20cm X 30cm) image took 52 hours!! Plus a set of brushes for the Dremel spindle I used to get the RPM up for the 1mm ball nose bit. It took a bit more than 2 weeks of constant machine time to make all 8 of them. While the CNC was carving the Corian, I made some frames with backlights that were made from the plexiglass parts of dead LCD computer monitors (which works great by the way) and all worked out.
Attachment 422134
Attachment 422132

These were done with Vectric photovcarve.
The .ngc file for LinuxCNC was over 400,000 lines of gcode
Steve

[fretman_2]

Are you engraving just lines or are you doing 3D work? You're workflows for each will be vastly different.

I want to CNC images onto 12x12 & 12x24 wooden panels

What kind of images do I need to provide to have this done? Are jpegs alright? What about the resolution? I imagine I want the best I can, but are there any specs?

Or do these images need to be created in CAD?

[routalot]

I didn't actually time the Ferrari badge as I was just curious about how well the facility to create a toolpath from an image might work.I was using a 1.5mm tool with a 0.3mm stepover and consequently the detail isn't anywhere near as fine as the lithophanes in post 21. I am intending to try the lithophane module of Freecad when I find a suitable piece of plastic to experiment with,my early experiments have taken quite a while to convert an image to something suitable for machining.Initially I was just rather pleased that LinuxCNC could generate any kind of 3D relief and I have no doubt that it could do a much better job if I had more practice with adjusting the settings to enhance the quality.