Chiron 3D X-axis belt adapter

prusaprinters

<p>My Chiron 3D printer, like Ender 3 and CR-10 had a less than ideal belt-path. I guess it is not a big deal but I could not stand it.</p> <p>I managed to get a working printer again, but I was not suspecting I would need to disassemble all X axis to mount these new pieces. And I needed a new belt too, as the original one was too short. And a good collection of zip ties too. And a lot of patience, and a file.</p> <p>So you have been warned, it will take more than one hour to install this and it may take away some of your sanity for good.</p> <p>Right now my printer is printing again (with a too stiff X-carriage but it seems to be ok). I will check later if X-axis scale needs to be adjusted due to this fix.</p> <p>Ah, yes, what these parts are for is for the bottom of the belt to be a straight line instead of the V-shape of the original design. You always want the parts of the belt attached to a moving carriage to be parallel to the axis of motion. Creality and Anycubic opted for an easy to mount but geometrically incorrect path.</p> <p>I guess another way of adressing this problem is to keep the belt-supports of the carriage and modify the two ends (motor and idler).</p> <p>You can see a poorly lit video of it in action: <a href="https://youtu.be/Bc3glm2kDgw">https://youtu.be/Bc3glm2kDgw</a></p> <p>And an estimate of how the belt length changes as the carriage moves along X axis:</p> <p>Such a change in length will translate into a non-uniform tension along the path. On top of that, the belt can rub the sides of the extrusion channel while moving which will degrade it sooner too.</p> <h3>Print instructions</h3><p>Licence: Creative Commons - Attribution Category: 3D Printer Parts</p>