Single linear rail y axis mod for bear frame

prusaprinters

<p>This a single linear rail version for the bear y axis to avoid alignment issues. The model is based on the bear frame (https://guides.bear-lab.com/) and was inspired by the Switchwire y-axis mount (https://github.com/VoronDesign/Voron-Switchwire).&nbsp;</p><p>You'll need:</p><ul><li>300mm mgn12h linear rail - high quality is preferred, but I went with a cheap two trees version for the proof of concept and that also worked quite well</li><li>331mm 2020 v-slot profile</li><li>Switchwire y axis carriage (https://de.aliexpress.com/item/1005003080338428.html) - actually much cheaper than a second high-quality linear rail</li><li>a bunch of M3 and M4 screws and t-nuts</li></ul><p>Putting it together is quite straight forward. The additional v-slot profile is to be placed in the center of the y-frame assembly and to be loosely fitted with the brackets. They are a bit finicky to get on, but a mic of hammer and t-nuts did the trick for me. Then the linear rail can be fitted with m3 bolts and finally the distance plate and y carriage. The alignment jig needs to be screwed to the outermost edges of the carriage and to the front 4020 v-slot to assure the carriage is level. Then the bracket can be fixed tightly. This needs to be done for the front and rear.</p><p>Additionally, an customized version of the belt holder and the Mk2/2.5 version of the motor mount need to be printer to assure belt alignment. The idler-assembly can be carried over.</p><p>I have included a step-file of my model, that includes slightly altered versions of the Voron Trident skirts (https://github.com/VoronDesign/Voron-Trident). Also bottom panels are included with holes for a Meanwell LRS 350-24 power supply to have it mounted below the print bed. There is also enough space for the rest of the electronics.&nbsp;</p><p>I do run my printer with a btt board and klipper, therefore I cannot tell if a Prusa printer will pass self-test. I'd need feedback on that.</p>