UniTak3D Ender 3 Dual Z-axis Linear Rail Bracket MGN12H MGN12C Linear Guide Carriage Conversion Plate Mounts Upgrades for Ender 3 Pro,Ender 3 V2 3D Printers NOT for Neo Series(Rail NOT Included)

These kits are super affordable and super simple, I love it. Install was easy, and the recommended guides to print are a heaven-sent. I printed two of each rail mount guide which made aligning everything a breeze. The little wrench in the provided STL's was also surprisingly helpful.I really like that the X axis is on top of the rail, as opposed to the side. This just prevents it from offsetting too much, which is nice.I have a Sprite Pro, and with that, the little tab piece that extends out for your end stop switch didn't quite work as intended. I somewhat figured that purchasing this kit, and ended up press-fitting it to the Sprite mounting plate. It's a temporary solution, but it works and hasn't slipped.Few things to consider when going to linear rails - you're obviously adding a lot of screws to your x and y axis. No issues in that regard, however, linear rails usually means you're looking for speed. When printing fast, if your screws aren't snugged up nicely, things will come loose, and especially on the y (as there's only one rail, it will be noticeable). I HIGHLY recommend a little Blue (NOT red) Loctite. Of course, get screws tight, but no need to be the hulk about it. The blue loctite will do it's job and prevent things from coming apart.As far as any complaints - I feel that the bracket that mounts the extruder to the linear rail is a bit bulky and heavy. Not the end of the world, but I'm sure that could be slimmed up a bit and beneficial in that regard. I'm also not crazy about the mounting plate for the y. I feel it's better shaped and trimmed up nicely, but it also does add some weight. But all things considered, this is very minor and outside of that, these are awesome kits that have been a pleasure to use. They will work with the Sprite which is great, just have to be clever about getting the end stop trigger piece to line up with the end stop.

Great pricing, seriously don't understand those 'boutique' machine shops charging the prices that they do. This simple plate easily adapts the Y carriage to seat onto any standard OTS linear rail. The instructions and videos from Unitak3D are simple and easy to follow along. Since installing on my voxelab aquila, I haven't needed to run the auto bed levelling in over 3 months of printing. The slide is smooth and the the carriage is plenty rigid enough with a single linear rail.

(Linear Z bracket)I went into this so carefully having read so many reviews saying it somehow doesn't work with the CR-10.I know the Ender and the CR-10 share the same frame design and brackets, so couldn't ever understand what they were talking about.Could it be the amount the Microswiss direct drive kit already brought my hotend forward, which had me already make these adjustments from stock? Possibly, but none of these things are make or break situations for people who are mechanically minded enough to adjust the odd bracket. Some changes from the factory leave some people needing to adjust endstops from new.The only thing I had to adjust that would not work right off the bat was to use a spacer with the x axis end switch, as the microswiss bracket was now no longer touching it.I used a small 60mm steel spacer with longer screws to bring the switch forward to bring it into alignment with the bracket.In short, if you understand how to adjust very common issues with switch placement that you may have already encountered, this works.It's fiddly, but it only took a couple of hours. I now have a wheel free printer with an insane quality capacity.One small other thing. I did not use the plastic spacers this kit comes with as my linear bearings can with their own steel spacers.I bought this kit, because that kit, for drawn out reasons did not include the brackets that this kit does.

Kit was fairly easy to install on the Ender 3 Pro. Make sure you go to the thingiverse site and download the linear rail guide they list. I printed 4 of them for mine. They make aligning easier to do so are worth printing. I did notice the black aluminum spacers provided were just slightly larger than the holes that the eccentric nut had been in. When you are at the thingiverse site downloading the rail guides if you go to the remix you will find a fix for that if needed for yours. The item is also listed at the Printables site as " Spacer for the Unitak3D Z axis linear rail kit ". The other 4 were fine, just the two where the eccentrics had been were iffy.When this is assembled it moves Y forwards about 11mm.On mine I also have a linear rail on X axis and a Micro Swiss direct drive extruder so quite a bit of Y was lost. It is an easy fix though. Flip the printer over and remove the 4 M5 bolts holding the Y axis extrusion to the printer. Replace them with 4 M5X35mm bolts with washers and lock washers and T-nuts. Now you can adjust the Y beam back and forth and set it perfectly for Y.I'd purchase this kit again if I wanted to add linear rails to a printer. Everything except linear rails was included and instructions were provided if needed. I looked at them to make sure nothing unusual was needed and it was a straight forward install.