Lenny the Happy Articulated Mechanical Lizard w Print-in-place GearBox 100% 3D printed easy 2 step assembly

prusaprinters

<p><a href="https://www.youtube.com/shorts/cN22IXL_Mlg">https://www.youtube.com/shorts/cN22IXL_Mlg</a></p><p><strong>Print Versions at the bottom of downloads page</strong></p><p><strong>Edit#2 09-09-2022. adding 100% scale stl files scale down to fit your print bed (80% is all that fits on my MK3s+. &nbsp;Sorry for the problems and a huge thank you to the people that have reached out to let me know about problems</strong></p><p><strong>Edit 09-09-2022. I had accidentally added the new body and gearbox at different scales. &nbsp;Thank You to djbkom for letting me know. I have fixed the gear box to now be at the same scale as the Stronger Joint version body</strong></p><p><strong>Edit 08-25-2022: &nbsp;Added 3MF and STL “LennyStronger Joints” which is the main body with much stronger neck joint. &nbsp;Please download parts at the bottom marked “New”</strong></p><p><strong>Thank you to IXPatch for pointing this problem out to me!</strong></p><p><strong>If anyone has problems with this model working, please let me know so I can try to fix it.</strong></p><p>Introduction:</p><p>I started 3Dprinting and using Fusion 360 this past January and have really enjoyed making this model (most of the time). There was also frustration and I went through about 3kg of filament testing and re-testing parts and fit. &nbsp;I have printed a lot of toy models to give to nieces, nephews and cousins and wanted to be able to give out something I designed myself. &nbsp;I had NO idea how to do this when I got the idea but loved the challenge.&nbsp;</p><p>Printing Instructions:</p><p>There are three parts- The Body, The Print-in-Place Gear box and the Tongue/strap. &nbsp;All were printed at .2 layer height. My best successes have been with Hatchbox PLA and MatterHackers Quantum. &nbsp;I have printed this on my Prusa Mk3s and on my son's Ender3v2</p><figure class="image image_resized" style="width:68.36%;"><img src="https://media.printables.com/media/prints/223089/rich_content/c6539481-9a6c-4b16-bb1d-ca10c2bab204/3fac7953-7edc-433d-b242-a87afd310006.jpeg#%7B%22uuid%22%3A%222426d93d-0d92-4e24-a786-a813f8caafe2%22%2C%22w%22%3A4032%2C%22h%22%3A3024%7D"></figure><p>The Body and gearbox are printed with PLA and can be printed together but should use some different settings (which is easy with Prusaslicer). The G-Code and 3MF files have the correct modifiers added for successful printing.&nbsp;</p><p>The Tongue/Strap should be printed in TPU at .2 layer height ( I used Cheetah 95A from NinjaTek). If you print it in PLA it may work for a short time before it breaks.</p><p>The Body is printed at .2 quality, 2 perimeters, 6 top and 4 bottom layers with 5% infill and I added a 50% infill modifier to the legs and ball joints for strength. (if you use too much infill, the tail will be heavy and hard to move with the gears).</p><p>The Gearbox needs to be printed with the gears against the build plate. I used .2 quality, 4 perimeters with 15% infill 6 top and 4 bottom layers.</p><p>&nbsp;</p><p>Post Print Processing:</p><p>After removing the Gearbox from the build plate, give the gears a few spins. If they don't turn freely, grab the small gear with two fingers and give it a twist, with some filaments (silk and eSun PLA+) &nbsp;I've had to do this.</p><p>After removing the body wiggle the tail pieces to make sure they are free.</p><p>&nbsp;</p><p>Assembly:</p><p>&nbsp;</p><p>The Gearbox will slide into the top of the body (it can be a little tight but should definitely fit) just hold the pins a bit as you snap it in. It will go down flush, with the top of the gear slightly protruding like in the picture below.</p><figure class="image image_resized" style="width:89.3%;"><img src="https://media.printables.com/media/prints/223089/rich_content/567bd25f-d29a-47e3-a24e-9af316c1f97e/29aebe1d-4e4c-4ee8-84cb-439d665c8aab.jpeg#%7B%22uuid%22%3A%2218568d28-d27b-4351-8d7a-25f4c05eb90b%22%2C%22w%22%3A4032%2C%22h%22%3A3024%7D"></figure><figure class="image image_resized" style="width:92.66%;"><img src="https://media.printables.com/media/prints/223089/rich_content/c6ffa17c-d761-435e-b5b9-165541d0400f/097e2931-f729-4da5-a58a-6cdf3604eb86.jpeg#%7B%22uuid%22%3A%227aea0ca6-173f-49b5-9f86-a86b0837a4f7%22%2C%22w%22%3A4032%2C%22h%22%3A3024%7D"></figure><p>Next drop the tongue down through the mouth and thread it through the tail</p><figure class="image"><img src="https://media.printables.com/media/prints/223089/rich_content/b42fab18-7144-40f7-bd64-c457a3685c24/aab69a75-c1c3-4825-a0f0-495c5a5fadc9.jpeg#%7B%22uuid%22%3A%22bd631466-59cb-4638-aac6-f5935b67263b%22%2C%22w%22%3A4032%2C%22h%22%3A3024%7D"></figure><figure class="image image-style-align-left image_resized" style="width:44.76%;"><img src="https://media.printables.com/media/prints/223089/rich_content/4937abe1-a9e7-44a9-a7b1-e698b0e52dd2/0146584d-cbe8-433a-a440-3e8b2080e0d4.jpeg#%7B%22uuid%22%3A%226dc77dd7-7571-4fbf-bc84-7c152037f023%22%2C%22w%22%3A4032%2C%22h%22%3A3024%7D"></figure><figure class="image image-style-align-right image_resized" style="width:46.7%;"><img src="https://media.printables.com/media/prints/223089/rich_content/9438a0a0-7e77-474e-b952-19b8dfc658b7/d2f5abe3-cc25-45be-9587-a8817f778a05.jpeg#%7B%22uuid%22%3A%226a5290b5-bca9-40d6-8729-a232367a12f2%22%2C%22w%22%3A4032%2C%22h%22%3A3024%7D"></figure><figure class="image image_resized" style="width:92.37%;"><img src="https://media.printables.com/media/prints/223089/rich_content/ef8e5eb2-b056-4c2c-ad31-60b89e0ad385/193dbb54-7f15-4971-81cd-12b6fd46a9ae.jpeg#%7B%22uuid%22%3A%22935a43c8-7910-4e7a-a325-310e5094aea5%22%2C%22w%22%3A4032%2C%22h%22%3A3024%7D"></figure><p>Push the hole in the strap over the pin on the end of the tail and your done!</p><p>Optional Steps:</p><p>You can put a drop of lubricant on the gears where they spin on the pins and if the strap doesn't want to stay on the tail pin, you could use a drop of super glue (I haven't needed to do this)</p><p>I would really enjoy seeing someone's make of this and if you have any problems with the model, let me know so I can try to help.</p><p>Thank You</p><p>&nbsp;</p>