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Wireframe - Trammell Hudson's Projects
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</li> <li class="md-nav__item"> <a href="../PGP/" class="md-nav__link"> Contact </a> </li> </ul> </nav> </li> </ul> </nav> </div> </div> </div> <div class="md-sidebar md-sidebar--secondary" data-md-component="sidebar" data-md-type="toc" > <div class="md-sidebar__scrollwrap"> <div class="md-sidebar__inner"> <nav class="md-nav md-nav--secondary" aria-label="Table of contents"> <label class="md-nav__title" for="__toc"> <span class="md-nav__icon md-icon"></span> Table of contents </label> <ul class="md-nav__list" data-md-component="toc" data-md-scrollfix> <li class="md-nav__item"> <a href="#wireframe-stl" class="md-nav__link"> Wireframe STL </a> </li> <li class="md-nav__item"> <a href="#platonic-solids" class="md-nav__link"> Platonic Solids </a> </li> <li class="md-nav__item"> <a href="#wireframe-prints" class="md-nav__link"> Wireframe prints </a> </li> <li class="md-nav__item"> <a href="#source-code" class="md-nav__link"> Source code </a> </li> </ul> </nav> </div> </div> </div> <div class="md-content" data-md-component="content"> <article class="md-content__inner md-typeset"> <h1>Wireframe</h1> <h3 id="wireframe-stl">Wireframe STL</h3> <p><a href="https://www.flickr.com/photos/osr/16181854980/lightbox"><img src="https://live.staticflickr.com/7393/16181854980_59c0dc2f8c_b.jpg" srcset="https://live.staticflickr.com/7393/16181854980_59c0dc2f8c_b.jpg 1024w, https://live.staticflickr.com/7393/16181854980_59c0dc2f8c.jpg 400w" /></a></p> <p>I'm working on a tool that will generate 3D printable connectors for the vertices in an STL file, allowing construction of very large objects. Instead of being limited to the print volume of the 3D printer, the size of the resulting thing can be almost arbitrarily large. This two-turn Mobius torus has some issues with intersections between the beams, but might work out. </p> <h3 id="platonic-solids">Platonic Solids</h3> <p><a href="https://www.flickr.com/photos/osr/16181756310/lightbox"><img src="https://live.staticflickr.com/7320/16181756310_729bb6e186_b.jpg" srcset="https://live.staticflickr.com/7320/16181756310_729bb6e186_b.jpg 1024w, https://live.staticflickr.com/7320/16181756310_729bb6e186.jpg 400w" /></a> Regular or periodic shapes seem to work well with this process. Very complex shapes, like the Stanford bunny, don't seem to work at all. The above rendering shows a <a href="https://en.wikipedia.org/wiki/dodecahedron">dodecahedron</a> that has been converted using <code>wireframe</code>: each vertex is now a connector that can be connected with 8mm pencils, each 19cm long.</p> <table class="gallery"> <tbody markdown='1'> <tr> <td class="gallery-image col-1" width="50.0%"><a href="https://www.flickr.com/photos/osr/16186952840/lightbox"><img src="https://live.staticflickr.com/7419/16186952840_6ec4e3e239.jpg" srcset="https://live.staticflickr.com/7419/16186952840_6ec4e3e239_b.jpg 1024w, https://live.staticflickr.com/7419/16186952840_6ec4e3e239.jpg 400w" /></a></td> <td class="gallery-image col-2" width="50.0%"><a href="https://www.flickr.com/photos/osr/16186417998/lightbox"><img src="https://live.staticflickr.com/8644/16186417998_2fbfb9d7c3.jpg" srcset="https://live.staticflickr.com/8644/16186417998_2fbfb9d7c3_b.jpg 1024w, https://live.staticflickr.com/8644/16186417998_2fbfb9d7c3.jpg 400w" /></a></td> </tr> <tr markdown='1' class='gallery-caption-row'> <td class="gallery-caption col-1" width="50.0%"></td> <td class="gallery-caption col-2" width="50.0%"></td> <p></tr> </tbody></p> </table> <p>The twenty connectors are printed (about 3 hours) and fitted together with the pencils. It's a snug fit and the piece holds together fairly well. I've posted the STL files to thingiverse as <a href="http://www.thingiverse.com/thing:653464">thing:653464</a>.</p> <p><a href="https://www.flickr.com/photos/osr/16187626708/lightbox"><img src="https://live.staticflickr.com/8566/16187626708_db1550e069_b.jpg" srcset="https://live.staticflickr.com/8566/16187626708_db1550e069_b.jpg 1024w, https://live.staticflickr.com/8566/16187626708_db1550e069.jpg 400w" /></a> Makes a nice table center piece, perhaps as a series of <a href="https://en.wikipedia.org/wiki/platonic solids">platonic solids</a>. I'm printing a companion <a href="https://en.wikipedia.org/wiki/Icosahedron">Icosahedron</a> and will be posting the rest of the solids to thingiverse.</p> <h3 id="wireframe-prints">Wireframe prints</h3> <p><a href="https://www.flickr.com/photos/osr/21473717318/lightbox"><img src="https://live.staticflickr.com/5800/21473717318_4a0d5a4c03_b.jpg" srcset="https://live.staticflickr.com/5800/21473717318_4a0d5a4c03_b.jpg 1024w, https://live.staticflickr.com/5800/21473717318_4a0d5a4c03.jpg 400w" /></a> The wireframe output can also be used to generate interesting prints of just the edges. There isn't an option to the tool to do this, so I hand edited the resulting OpenSCAD file to remove the connector pieces and extend the rods the entire distance. The wireframe bust of Sappho is available as <a href="http://www.thingiverse.com/thing:1031698">thing:1031698</a> if you want to try it on your printer.</p> <h3 id="source-code">Source code</h3> <p>The code is pretty rough: <a href="https://github.com/osresearch/papercraft"><code>github.com/osresearch/papercraft</code></a>. Like <a href="/Unfolding_STL"><code>unfold.c</code></a>, <code>wireframe</code> reads a binary STL file on stdin and writes the OpenSCAD file to stdout. There are currently no options for selecting different sizes or shapes of connectors, nor to control the size of the nodes. You must edit the file, run <code>make</code> and re-process the STL.</p> <pre><code> make wireframe openscad -o foo.stl foo.scad ./stl-convert < foo.stl | ./wireframe > foo-corners.scad </code></pre> <p><a href="/Category:2015"><span style='color:white; background-color:red'>2015</a> <a href="/Category:3D_Printing"><span style='color:white; background-color:red'>3D Printing</a> <a href="/Category:OpenSCAD"><span style='color:white; background-color:red'>OpenSCAD</a></p> <hr> <div class="md-source-file"> <small> Last update: <span class="git-revision-date-localized-plugin git-revision-date-localized-plugin-date">November 8, 2020</span> </small> </div> </article> </div> </div> </main> <footer class="md-footer"> <div class="md-footer-meta md-typeset"> <div class="md-footer-meta__inner md-grid"> <div class="md-copyright"> Made with <a href="https://squidfunk.github.io/mkdocs-material/" target="_blank" rel="noopener"> Material for MkDocs </a> </div> <div class="md-social"> <a href="https://twitter.com/qrs" target="_blank" rel="noopener" title="twitter.com" class="md-social__link"> <svg xmlns="http://www.w3.org/2000/svg" viewBox="0 0 512 512"><!--! 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