1/8" aluminum with Christmas tree carving, backed by Inventables light diffusing acrylic. Long screws serve as the stand and hold the acrylic to the aluminum.
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Under the following conditions:
With the understanding that:
Dimensions: 12 in × 12 in, Form: Sheet, Material: Aluminum, Thickness: .125 in
Finish: Black, Length: 35mm, Pitch: 0.8mm, Quantity: 10, Type: Screw, Screw Type: Button Head, Thread Size: M5
Finish: Black, Length: 10mm, Pitch: 0.8mm, Quantity: 10, Type: Screw, Screw Type: Button Head, Thread Size: M5
Dimensions: 12 in × 24 in, Thickness: 1/8 in, Opacity: Opaque, Color: Red, Surface Finish: Glossy, Cut Tolerance: +/- 1/8 in, Thickness Tolerance: +/- 8%
I included a DXF file along with a Vectric, .CRV file.
I used 60 grit, then 220 grit then 400 grit (wet sanding).
Put holes in each corner about .5" away from the edges. Use the longer screws for the bottom and they serve as a stand.