Litho Marine Memorial - Arlington National Cemetery

[don]

Marine Memorial - Arlington National Cemetery

Material: Dupont Corian - Bone
Litho machined with a 0.050" ballnose with a 16% step over (0.008")
X,Y,Z feed rate @2.5
Spindle rpm @ 9,000
3hours, 32 minutes, 30 seconds
Recessed area of the litho is 9.25" x 7.5"
Overall Dim: 9.75" 8.0"

Tool Paths:
Outside Profile: 0.25" Carbide 0 (zero) flute - South East tools
Lithophane Boundary: 0.050" dia and .140 flute length Carbide Ballnose (unknown manufacture)
Offset Boundary: 0.050" dia and .140 flute length Carbide Ballnose (unknown manufacture)

I offset the litho boundary vector by 0.020" which is 0.005" smaller than half of the tool diameter of 0.050".
The purpose of this was to clean up and make the the wall of the litho boundary smooth to give it a finished look.
This was a last minute, I wonder if this will work / what if I did this.... I was pleased how it came out.

[hespj]

Wow!!

Extraordinary. A great example of what can be done with a ShopBot.

John

[don]

Thanks John,
I appreciate your comments

[kevin]

Don
Thanks for your post a great project to see if your shop bot is calibared corectley

Looks good

[don]

Thanks for the comments Kevin,

I've decided I'm going to rerun this file, When done, I'll attempt to create another toolpath on just the Marines with a much smaller bit to see if I get more detail of the wrinkles and facial features.

And I'm also going to place the first one in a toaster oven and wrap it around a cylindrical mold. Put a top and bottom with a back and my light source.