Although it would be great for a 3D printer, the slide rail bearing has too much play for the CNC mill which puts different back pressure on it. I should have spent more to get something with a wider bearing support. I just bought stuff to build my own Z axis to replace this. It's a good product though, just be aware of the design limitations. I give it 4 stars because while it's a good product it didn't work for my purpose even though it's sold in the Q&A section.
Iverntech MGN12H Linear Rail Guide With Stainless Steel Carriage Blocks - 700Mm Length For 3D Printer And CNC Machine
9 Review
Upgrade Your Furniture With Happybuy 10 Inch Stroke Electric Actuators - Heavy Duty 6000N DC 12V With Mounting Bracket For Recliner, TV Table, Lift, Massage Bed, And Sofa
9 Review
Powerful And Waterproof Electric Micro Linear Actuator 12V With Mini Size And Mounting Brackets For Various Applications
11 Review
Iverntech MGN12 400Mm Linear Rail Guide Upgrade For Ender 3, Corexy, Tronxy, Delta Kossel 3D Printers And CNC Machines With Stainless Steel Carriage Block
12 Review