Equilateral Triangle with a linear extruded frame
thingiverse
Creating an interlocking wireframe structure with swappable text panels is quite an achievement, particularly since I used trigonometry and rounded corners thanks to Mathgrrl's helpful tip. Printing at .2 layer thickness with 10% infill and no supports resulted in lots of space between layers - possibly due to old filament or design issues. This first prototype lays the groundwork for actual designs by demonstrating how separate components can work together. Thanks are in order: OpenScadTutorial.org provided preliminary instructions, giving me a solid foundation. Mathgrrl offered the solution I needed for rounded corners using the cointrap method found here: makerhome.blogspot.com/2013_08_27_archive.html Wikipedia helped me refresh my memory on fundamental trig concepts using images like this: en.wikipedia.org/wiki/List_of_trigonometric_identities#mediaviewer/File:Unit_circle_angles_color.svg My wife and son have been patient while I experiment and learn, putting up with my long hours of tinkering.
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