Mechanical Revolver Organizer

prusaprinters

<p><strong>What:</strong></p><p>Design features a working revolver mechanism, making that organizer an addictive toy.&nbsp;</p><p>Cylinder comes in 2 variants: 8-shot Standard and 6-shot Magnum.<br>Standard is 11mm caliber - suitable for pens, pencils etc.<br>Magnum is 18mm - perfect for thicker markers, toothbrushes etc.&nbsp;</p><p>*sadly, synchronization in Magnum is a bit off - gears were designed only for 8-shot.&nbsp;<br>Still spins though :P</p><p><strong>Why:</strong></p><p>Years ago I designed <a href="https://www.thingiverse.com/thing:2844643">this</a>, now I wanted to make a new revision showing my progress since then. &nbsp;</p><p>I wanted to make a mechanical design without BOM. All components should be printable, including print-in-place bearings (or kind-of bushings).</p><p>Well, bearings still require some grease, which is hard to print.&nbsp;</p><p>This project was a spring design study - 3 of them were used to 1. preload the trigger, 2. push the cylinder ratchet, and 3. cylinder stop. There's still a place for 1 or 2 more to make the movement more accurate. I also included different spring variants for different fun levels.&nbsp;</p><p><strong>How:</strong></p><ul><li>Start with the cylinder assembly since it's the easiest part. Just follow the picture below.&nbsp;</li></ul><figure class="image image_resized" style="width:22.78%;"><img src="https://media.prusaprinters.org/media/prints/143721/rich_content/a65e42de-5793-482e-99ce-0da60a183884/cylinder.jpg#%7B%22uuid%22%3A%22dbba0f88-13a9-41cd-a266-1b6cf20bfefa%22%2C%22w%22%3A231%2C%22h%22%3A801%7D"></figure><ul><li>Now the hard part. Images below show the orientation of components.&nbsp;<br>Start with placing rotation limiters and ratchet pusher on the shaft.</li></ul><figure class="image image-style-align-center image_resized" style="width:50%;"><img src="https://media.prusaprinters.org/media/prints/143721/rich_content/d342a327-767e-4885-9161-7f107c4e5df4/alignment.jpg#%7B%22uuid%22%3A%224e6b6652-5d2d-4447-b550-4d89c8ee678f%22%2C%22w%22%3A400%2C%22h%22%3A115%7D"></figure><ul><li>Press the trigger spring on the shaft and then install it in the base. There are groves that keep parts in position. Spring should be slightly preloaded when set in place correctly.&nbsp;<br>Put bearings in brackets, then fix the shaft to the base with bearing brackets.<br><img src="https://media.prusaprinters.org/media/prints/143721/rich_content/fde76a82-a3b5-445a-a878-fbbfbbed7f37/mechanism.jpg#%7B%22uuid%22%3A%226a9a2161-36aa-42d8-9164-da432e9f6cb1%22%2C%22w%22%3A1089%2C%22h%22%3A210%7D"><br>If you aim for Magnum, use a longer shaft and add 2 more limiters as spacers.</li><li>Assemble the beam and pins, install the cylinder stop spring, place the beam over the mechanism and press it into the base plate. &nbsp;</li></ul><figure class="image image_resized" style="width:32.63%;"><img src="https://media.prusaprinters.org/media/prints/143721/rich_content/0be34aa7-b67f-4d9d-80c8-b3f5a99e5ff3/beam.jpg#%7B%22uuid%22%3A%22ca249b3a-64c7-49ed-896b-3c337e57e495%22%2C%22w%22%3A326%2C%22h%22%3A246%7D"></figure><ul><li>Join pads with the base using printed pins. Mount the cylinder assembly in the beam's middle hole. You may need to adjust the ratchet rotation angle in relation to the cylinder to calibrate the most satisfying clicking position.</li></ul><figure class="image image-style-align-center image_resized" style="width:50%;"><img src="https://media.prusaprinters.org/media/prints/143721/rich_content/c7c61664-c2ed-41df-a663-301021bd79ab/assembly.jpg#%7B%22uuid%22%3A%222a49709e-f18f-4f10-9b7a-6a1a8be78835%22%2C%22w%22%3A638%2C%22h%22%3A745%7D"></figure><p>&nbsp;</p><p>&nbsp;</p>