Cardboard Spool Ring for Bambu Lab AMS (parametric)

prusaprinters

<p>Bambu Lab doesn't recommend using filaments with cardboard spools with the AMS, as they can produce dust and block the rollers or the cardboard edges could fray, causing issues. By snapping this model onto the cardboard spools, only plastic makes contact with the AMS, solving these issues.</p><p>Tested to work with Polymaker (e.g. PolyTerra / PolyLite), Overture, eSun, Smartfil, Reflow, PrintBed, GNVTNTP, PrintedSolid Jessie, Duramic and Inland cardboard spools. If you find this works with a brand of filament with cardboard spools that's not listed here, please leave a make or a comment and I will add it to the list!</p><p>I recommend you to print the <strong>regular</strong> <code>cardboard_spool_ring</code> file first and make sure the diameter is exactly 202 mm. If it doesn't fit in your AMS or you have other issues, look at the <strong>Versions / Troubleshooting</strong> chapter below.</p><p>Prints nicely without supports in PLA at 0.20 mm layer height. I provided the STL (to use in your favorite slicer) as well as the Fusion 360 design file, should you need to make changes for a filament brand with a different spool size or hole pattern. I also provided two “.gcode.3mf” files (one for Bambu Basic PLA, one for Generic PLA) which you can directly put on a microSD card, insert it into your Bambu Lab X1C and print from the touchscreen. If your printer is not dimensionally accurate you may have to scale the print down / up. If you're using a Bambu Lab X1C to print this on the Cool Plate, make sure to only apply a <strong>very light</strong> amount of glue stick, else it may be difficult to remove it from the plate without breaking it. If you have one, I would highly recommend printing it on a textured PEI sheet without glue stick, which makes it very easy to remove the print without damage.</p><p>If this helps you, please consider giving it a like, I would appreciate that a lot!</p><h3>Versions / Troubleshooting</h3><p>As the size of each AMS and cardboard spool is slightly different, you may need to print a different version in order to make it work. Look through the following steps and try them in order until your problem is solved.</p><ul><li>If the AMS doesn't close, try printing <code>cardboard_spool_ring-thinner</code></li><li>If the edges of the cardboard spool are uneven or wobbly (as was reported by some users with Overture spools), try printing <code>cardboard_spool_ring-thinner_straight</code><ul><li>As this version doesn't have a snap on the side, you need to <strong>glue it to the spool</strong>, either by using CA glue or applying some glue stick on the side.</li></ul></li><li>If the printed ring only fits very loosely on the spool and falls off, try printing <code>cardboard_spool_ring-smaller</code></li><li>If the cardboard spool spins on the printed ring, apply a touch of glue stick to the ring.</li></ul><p>If none of those solves your issue, please write a comment, explaining your issue.</p><h3>Parameters</h3><p>You can modify this design in Fusion 360 using parameters to make it fit a variety of different spools and AMS sizes. You can change them by clicking on <strong>Solid → Modify → Change Parameters</strong>.</p><p>Here is an overview of the parameter values and the values of the regular <code>cardboard_spool_ring</code> version:</p><figure class="table"><table><thead><tr><th><strong>Parameter name</strong></th><th><strong>Value</strong></th><th style="width:450px;"><strong>Description</strong></th></tr></thead><tbody><tr><td>bottom_thickness</td><td>1 mm</td><td style="width:450px;">Thickness of the part that touches the spool on the side.</td></tr><tr><td>cardboard_thickness</td><td>3 mm</td><td style="width:450px;">Thickness of the cardboard on the spool.</td></tr><tr><td>spool_diameter</td><td>200 mm</td><td style="width:450px;">Diameter of the spool.</td></tr><tr><td>edge_thickness</td><td>1 mm</td><td style="width:450px;"><p>Thickness of the part that goes around the edge of the cardboard spool and sits on the rollers in the AMS, adding to the diameter of the spool.</p><p>Decrease this if the AMS cannot be closed as the diameter is too big.</p><p>For example: If the spool diameter is 200 mm and this value is 1 mm, the final diameter of the printed spool ring will be 200 mm + (2 * 1 mm) = 202 mm (as there is material on both sides).</p></td></tr><tr><td>width_to_holes</td><td>7 mm</td><td style="width:450px;"><p>Width between the edge of the cardboard spool and right before the holes start (which you use to stick the loose end of the filement in for storage).</p><p>Decrease this if the printed part covers holes on the cardboard spool.</p></td></tr><tr><td>total_width</td><td>13 mm</td><td style="width:450px;"><p>Width of the printed part that covers the cardboard spool's side (one side only).</p><p>Must be larger than or equal to "width_to_holes".</p></td></tr><tr><td>fillet_radius</td><td>1 mm</td><td>Size of the internal fillet, to increase strength in case the layers separate when taking it off the bed.</td></tr></tbody></table></figure><figure class="image"><img src="https://media.printables.com/media/prints/251028/rich_content/4c6510ca-e458-49a6-b946-36c6c88164e7/cardboard_spool_ring_img_1.png#%7B%22uuid%22%3A%226024ab07-a38b-44b3-8a65-d6c6029bfd37%22%2C%22w%22%3A3179%2C%22h%22%3A1845%7D"></figure><figure class="image"><img src="https://media.printables.com/media/prints/251028/rich_content/d4ce66d5-aa72-4d71-bbe6-a519be0809ce/cardboard_spool_ring_img_2.png#%7B%22uuid%22%3A%221ae57579-9ccb-4359-ad8d-400ce59d134a%22%2C%22w%22%3A2946%2C%22h%22%3A1157%7D"></figure><h4>Differences between versions</h4><ul><li><code>cardboard_spool_ring-thinner</code> and <code>cardboard_spool_ring-thinner_straight</code><ul><li>The parameter <code>edge_thickness</code> has a value of <code>0.5 mm</code></li></ul></li><li>&nbsp;<code>cardboard_spool_ring-smaller</code><ul><li>The parameter <code>spool_diameter</code> has a value of <code>199 mm</code></li></ul></li></ul><h3>Notes</h3><p>This design is heavily inspired by <a href="https://www.printables.com/model/217622-cardboard-spool-ring">this model</a>, which unfortunately is too big for use in the AMS and the lid cannot be closed. This design is smaller which allows the lid to close and the spool to roll freely in the AMS.</p>