[Gulfcoast Robotics] MGN12 Linear Rail Precision Motion Kit for Ender 3, Ender3 Pro and Ender 3 V2 (Single Rail, Ender 3)

Every ender 3 owner should purchase one of these, best upgrade this far. High quality products, amazing customer support, I hope to continue purchasing things from this company.

This setup replaced the rollers with TWO linear rails. It does not suffer from any wobble like single rail Y axis kits do. I am very impressed with how precise the 3D printer is now in terms of each layer's position is. I already had rails on the X axis and I already upgraded the Z axis to dual lead screws, but this is the addition that got it to the point where I no longer experience layer adhesion issues nor Z banding.

The linear rail carriages were missing ball bearings and bind/snag like crazy as a result, this mod has introduced significant layer shifting whereas with the old belt and roller setup I had none. The instructions provided were for the single-rail kit for the OG Ender 3, not the dual rail kit for the Pro, despite the google drive folder being named "E3 Pro Y".

Excellent customer service, super quality upgrade for my Ender 3 V2! If you have questions or problems they respond very fast! Buy this with confidence!

The races are rusty. Thought I would pay premium over basic Amazon linear rails at a fraction of the price to not have to worry about ripping everything apart when I got them, but doesn’t appear to be the case.

Seemed like a well put together kit, sadly due to some confusion thanks to Amazon I had ordered the wrong one and need to return. Rails felt like they worked well had some binding in one area, but after applying a little synthetic grease I had on hand it felt much smoother.

Buy quality buy once,