About this 3D model
You need to use 5mm material to laser cut this. Otherwise it's just not worth it and you should 3D print it. I used 2.15mm acrylic and had quite a lot of trouble scaling. EDIT: Used Netfabb to repair 2nd plate, then used the following OpenScad code to render a 2D projection of both plates which could be exported to DXF: projection(cut=true) import("Zilla_Play_2.stl); New files are NewZilla.dxf. Thanks goes to @sgraber. This is a DXF version made by a screenshot of the OpenScad render, then Trace Bitmap in Inkscape, ..., then export to DXF.