3D Printable Floppy Animal

3D Printable Floppy Animal

prusaprinters

<figure class="media"><oembed url="https://www.youtube.com/watch?v=8dRado33eSc"></oembed></figure><p>For this build, you need a very specific spring. I got mine from a spring assortment from the big online store with A. It needs to be a compression spring with a length of 34.9 mm and a diameter of 9.12 mm. If you search for “9.12 x 34.9” you will find them. They are in multiple assortments so I guess it is a more common size.</p><p>Then you need some string that should be thin, flexible and strong. Especially if you want to give the finished toy to a kid, make sure the string is stronger than the kid. Otherwise, the small beats could result in a choking hazard.</p><p>Print all the files the number of times that the filename states. A layer height of 0.2mm works great for this project. Make sure to set “Layers and Perimeters” &gt; “Seam Position” to "Rear" and rotate the head and the body such that the seams are in their back. You do not need support structures for the files.</p><p>I do recommend tho, to print the limbs separately because they can easily detach from the print plate and you do not want to ruin your other parts with those. Also I had success using 2mm of brim to make sure the limbs do not come off.</p><p>I recommend that you also grab yourself a short piece of stiffer nylon, that you can guide through the holes to pull the strings through. Some holes are curved and with flexible string, it can result in a very frustrating assembly experience ;-)</p><p>For the assembly itself, I figured that the best way is to follow these steps closely</p><ul><li>First you need to cut 4 pieces of string. They should be equally long and approximately 20 cm in length.</li><li>Then you tie them to the 4 loops on the pusher plate. Make sure they will never come loose again, because you cannot redo these knots once the figure is fully assembled.</li><li>Next you thread the strings through their corresponding holes in the “Main Case”.</li><li>To finish the bottom assembly, you insert the spring into the “Pusher Plate” and push everything together while pulling on the strings such that they do not get tangled up in the process.</li><li>Then you need to pretension the spring. You probably noticed that the bottom plate is not inside the case while the spring is relaxed at this point. So you want to push the “Pusher Plate” in and use the “Pretensioning Spacer” to push it in a bit further.</li><li>With some stripes of tape, you can temporarily fixate everything in place. Now we are fully set to assemble the animal on top.</li><li>I recommend you start with the front first. Thread one “Foot” and two "Limb" pieces onto each of the two front strings.</li><li>Then you need to thread both strings through the animals body</li><li>On top, you thread both strings through one “Limb” piece again, and then through their respective holes in the head.&nbsp;</li><li>Last, tie a tight knot in the string that makes the front part stand up on its own. It does not need to be super tight because the “Pretensioning Spacer” gives you two additional millimeters of string length before the pusher comes out of the case.</li><li>Repeat the last 4 steps with the back of the animal, only that you use two “Limb” pieces for the tail.</li><li>You should not glue the holes and cut the remaining string yet. Undo the tape on the base to make sure your animal works and all the strings have the correct length.</li><li>If you are happy with the result, I recommend threading the remaining string sticking out of the head and the tail back through their holes and cut them from behind. That way, you will get a much cleaner look.</li><li>Lastly, if you have a 3D printing pen, use it to fill in the holes with some more material to make it look great</li></ul><p>&nbsp;</p><p>If there are any more questions, feel free to leave them in the comments below or ask me on twitter @0x3b29. Also check out my blogpost for a gallery with detailed pictures of the assembly process: https://olivier.berlin/3d-printable-floppy-animal/</p><p>Enjoy</p>

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