Full Bear Y-Axis Linear Rails MGN12C

thingiverse

This is a significant upgrade to replace the Y-Axis rods and bearings with linear rails on a Full Bear MK3 printer. The rail holders are reimagined from the original rod holders (same aesthetic) designed by Grégoire Saunier (https://github.com/gregsaun/prusa_i3_bear_upgrade). To utilize this upgrade, you will need: + Two MGN12 rails (328-329mm length) + Three MGN12C blocks (four M3x8 screws, two M3x12 screws and two square nuts per block). Alternatively, you can use a MGN12H instead of a MGN12C on the right rail. I have sourced these components from Amazon: https://www.amazon.com/dp/B07GBNWDTL/ref=sspa_dk_detail_0?psc=1 I have printed and inspected these parts, and the printer has successfully completed the self-test and XYZ calibration. This confirms that the measurements are accurate. My objective is to implement this upgrade in a straightforward manner without significantly altering the Full Bear design. The question arises: What provides more stability when installed in air - rods or rails? Step files are provided for personal improvements and customization. **UPDATES:** 2019/05/16: + I have added a MGN12H carriage block if you wish to use this on the right rail. However, on the left side, there is insufficient space, accommodating only MGN12C. + I have included the Left_Rail_Holder.zip.amf file with custom support enforcer. 2019/08/20: + A minor correction: I adjusted the distance between holes to attach the heatbed, which was initially set at 19.5mm and should be 20mm.