If you are interested in fighting a little more with a CAD program, you can try to simplify those extrusion shapes there. Actually only the left half of the shape was drawn because the shape is symmetric. The curves are not perfect, but they are drawn fast. I bet the laser cutter wants them.ĪDD: just to test the drawing process over the PDF I drew one shape in Illustrator with the pen. Screenshot is so light computer load that you can draw on it in Inkscape.ĭrawing it is also the way to get non-overlapping contiguous paths. You can get the screenshot for example from SketchUP. As well you can use a screenshot as your model. If you get the XY plane projection to Illustrator as I did, you can lock it and draw with the pen tool your own version.
The downloaded shapes are quite simple so I recommend you to redraw them. In Inkscape I did not get anything useful from either. The PDF version worked a little faster than the SVG version.
In Illustrator it was possible to select lines and delete them. Any attempt to make a single shape with the Shape builder freezed Illustrator. They freezed Inkscape and made Illustrator slow. The XY plane projection contains thousands partially overlapping straight line segments. Here's a piece seen from tilted direction: The STL is actually a 3D surface made of thousands of small triangles. I thought at first that saving the projection as PDF or SVG (both are possible), opening it in Illustrator or Inkscape and deleting unwanted lines does the trick. If one opens the STL file in a cad program and watches the model in XY plane, he can see something which is at first quite promising:
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