Iverntech MGN12H Linear Rail Guide With Stainless Steel Carriage Blocks - 700Mm Length For 3D Printer And CNC Machine Review

Can’t compare to anything since these are the first linear rails I’ve used. They came packaged well and straight. Not major dings, but the carriage blocks were not identical between the four rails I got. They were all the same size and bolt pattern, but the internals were all a bit different.Don’t have an accurate enough caliper to verify the ball size, but my caliper measure 2.38 for the balls. Take that for what you will.After a good cleaning and some super lube synthetic grease these are…

I used these to make a custom corexy printer, and they are running smooth. I purchased 3 of the single-carriage 450mm size, and all three came clean and running smooth. I previously had other knockoff rails that cost less, but the old sets didn't run as smooth, and eventually started binding. These have been running longer than the previous set and are still running smooth.They were also well packaged; in undamaged plastic sleeve, and held between foam ends. Be aware of the couple of extra ball

I was very surprised by how smooth these were. I previously purchased the 450mm and it was no were near as smooth as these. Very satisfied with this purchase. Using on a 3D printer build for the Z and X axis. Will see how it hold up on the X axis over time.

With a bit of care these work well. The machining is a bit rough. I recommend cleaning and re-oiling before use. If not the bearings will chatter instead of moving smoothly.

I liked the fact that the price was extremely cheep, I normally design for and install only Hiwin rails and bearings on my custom machines at work. These are the exact same size as the hiwins but they offer poor profomance, this is easily resolved by disassembling, cleaning and reassembling with precision ball bearings and new lube.

Now Im not a machinist, but i think some people expect professional grade machining from low end parts. Not to say there is not legitimate criticism in these reviews. Rust? Unacceptable. Slight drag? Acceptable. I bought 4 of these, a pair at a time. First, love the look of the black, keeps the glare from light shining off them and onto my computer screen to a minimum. I also bought a spare set of ball bearings and some new oil. First set, drag on both, not terrible but i followed the advice of

I wanted these to work but I was only able to get one working just okay. I degreased them to get off the factory coating and then lubed with super lube oil (not the grease) and 2 of 3 were still catching all down the rail so I took the one that worked okay and degreased again and tried new bearings which made things worse so I put the old bearings back in and relubed with 3 in 1 oil and slide the carriage back and forth while lubing intermittently to hopefully wear in the rail. About 30 minutes

These rails really perform pretty amazingly right out of the box. Unlike a lot of the cheaper Hiwin replicas out there, these came nicely oiled and sliding smoothly instead of covered in shipping wax and dragging.That being said, I still did my standard practice of disassembling the rails, cleaning with isopropyl alcohol and re-lubricating with Slick50 Supercharged One Lube and MAN are these things smooth now!While I had them apart, I noticed a few small details that I think are major…

Bought of few of these for a 3D printer upgrade and some were pretty rough, but I did not want to quit on these rails. So here a few things I learned from looking online forum boards and youtube videos.1. Clean everything, that includes getting rid of the grease/lube that's already on it, then getting whatever you feel comfortable to grease/lube the parts.2. Inspect the Carriage block, sometimes changing the small ball bearings help or sanding extremely lightly the excess plastic guide to keep…