He threw out everyone who seemed to think to input something to the machine without him. The "cutter" I wrote was a person who operated the laser cutting machine. I opened the result in Inkscape and gave to it red stroke to make it visible. Press DEL and you have only the XY plane polylines:Īll curves are actually tens of joined straight lines: Then turn the projection straight sideways and select all but those lines which are in XY plane: A tilted watching direction shows that a big part of the sides of the surface triangles have vanished there's left only the basic skeleton: It removes all surfaces and leaves a bunch of polylines which float in the space. Do like I did, get a free demo of TurboCAD Deluxe and open the STL file. It's not especially difficult if you use a simple enough program. 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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