Usongshine Sliding Engraving Machine with Advanced Bearing Power Transmission Review

I'm impressed that these rails and carriages are very smooth. The rails are very smooth and stamped. Quality splint at an affordable price.

I remember when I had to monitor Ebay for months to find such a linear guide. The great thing is that they are now mass-produced so they come in all sizes and styles and are priced below the surplus. Of course, they're not THK or even HiWin, but they're good enough for everyday use. I use them to build my own 3D printer. We live in glorious times!

I bought 4 of these (MGN9) to convert my CoreXY 3D printer's Z axis from rods to rails. I had already converted the X and Y axis to rails (different brand) and these rails had to be thoroughly cleaned and re-oiled before use. This is to be expected from the cheaper rails sold here at Revain. But I am very happy to report that not only were all 4 rails packed very well in individual boxes, but all 4 moved smoothly and freely. I am very impressed with them considering my previous experience with…