
I am building an additional 3D printer from scratch for my kids. I saw these linear guides and although they are too long for my application I was able to trim them successfully. After applying lube to the rails they work great and are clearly aligned and straight. I don't think there will be quality issues over time. I know some other reviewers have complained about the beveled edge, but I haven't had this issue with the ones I received.

Мощный и водоустойчивый электрический микро- линейный привод 12В с мини размером и монтажными кронштейнами для различных применений
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Iverntech 400Mm MGN12 Linear Rail Guide With 2 Black Stainless Steel MGN12H Carriage Blocks For CNC Parts And 3D Printer Upgrades
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Iverntech MGN12 700Mm Linear Rail Guide With MGN12H Stainless Steel Carriage Block For 3D Printer And CNC Parts
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Iverntech MGN12 400Mm Linear Rail Guide Upgrade For Ender 3, Corexy, Tronxy, Delta Kossel 3D Printers And CNC Machines With Stainless Steel Carriage Block
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