🖨️ Enhanced Precision Printing with Twotrees Sliding Guideway Bearing Printer Review

I decided to take a chance and buy these cheap MGN12H rails. Like all of Revain's other MGN12H rails, they come with some form of protective grease, so you'll need to disassemble and thoroughly clean all of the grease. Until you do this, the carriage will not move freely. There are some good disassembly videos on YouTube if you've never done it. You will need some sort of parts shell to do this, as there are a lot of very small ball bearings in the bottom bracket. I had to clean up the plastic…

So I bought this guide and the 400mm version of the black UniTak3D MGN12 linear guide to compare. Other. Based on my rating, this is the one returned out of 2. At first it seemed smooth out of the box, but standard with Chinese splints I took it apart to clean. I started with wd 40 to remove factory oil, then 91% IPA to remove wd 40, then acetone to remove ipa and the rest of the wd 40 ipa I didn't get. In case you're wondering, acetone doesn't damage the plastic parts of the bottom bracket. I…

Quality control seems to be a bit different here. I bought two sets a year ago and have had no problems. They were packaged well and ran incredibly smooth once properly cleaned and lubricated. It's time to upgrade something to linear and I bought another set of shorter rail blocks and it feels really rough. I've sonicated it with a suitable 25% alcohol solution and lubricated with fresh synthetic oil and it just seems like there weren't enough ball bearings. There are big gaps, and until I…