![]() ![]() Robert Lang developed a program for Mathematica based on that paper, which was what we used to obtain the geometry for this model. If you want to study the math behind the model, here's the literature it was based on. The only trade-off is that it doesn't quite have the pop that the default model has in the opening and closing sequences. It includes special bisections on certain panels, allowing for a folding action that doesn't place any transverse stresses on the hinges: its deployment only involves motion about the axes. If you find that whatever filament you have is struggling with the default model, the rigid foldable alternative may be a good choice. PLA worked fine for the three demos we made. You're welcome to experiment with printing the first two layers out of a more flexible material, and then printing the remaining layers with something stiffer. It's best to remove your print from the build plate sooner rather than later: the residual heat from the plate will help you bend the creases into the model (see the gif for which directions to bend them in). Here is a tutorial on how to modify individual layer heights in the Prusa slicer. ![]() See this post for a tutorial on how to make your own living hinges). This ensures that all folds have something close to two orthogonal layers of filement on which to bend (printing with a single 0.2mm thick bottom layer will mean that at least two of the hinges will break very easily. The model, at its current scaling, is intended to be printed with two 0.1mm layers as the base. ![]() This model is best printed in PLA, or some other similarly flexible material. It demonstrates the ability of the flasher pattern to go from a flat state to a much more compact, folded state, all while moving with a single degree of freedom. This is a 3D-printable flasher pattern based on the work of Shannon Zirbel, Robert Lang, and several others. ![]()
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