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Pros & Cons
pros
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pros
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Build Quality
Customers are highly satisfied with the build quality of the UniTak3D MGN12 Linear Guide Rail and Carriage Block, praising its sturdiness and worthwhile upgrade for their 3D printers. Some users recommend cleaning off packing grease before installation.
neutral
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Smooth Movement
Customers generally praise the smooth movement of the UniTak3D MGN12 Linear Guide Rail, with some mentioning that it requires lubrication for optimal performance. A few customers have experienced issues with the rail being stiff or locked in place, but overall are satisfied with the product's smoothness and improvement over previous Chinese linear rails.
Greasable Bearings
Customers have mixed opinions on the greasable bearings of this linear guide rail. While some praise their high quality and ease of use after cleaning and lubrication, others find them undersized and in need of replacement for optimal performance.
Highlights
Quality
Smooth rail, smooth bearings, rails tolerances were good, i'm happy.
Slides smoothly and the blued rail looks great.
I do believe they will be fine for 3d printing but i wouldn't trust them for anything requiring a heavy load or ultra precise.
Need to wash off with alcohol and grind with a high-quality lubricant.
Price
I got this rail for a camera macro focusing rack and i'm pretty happy with it for the price.
I have to say for $25 i assumed this would be sub par.
For the price, these work well for my use.
Shipping
This was shipped very well and came very fast.
Both were packaged very well and came quickly.
Competitiveness
Great motion--much better than other brands i've bought on amazon.
That's way more than i can say for other linear rails i've gotten.
Overview
- How are reviewers describing this item?
linear, good, still, great and better. - Our engine has profiled the reviewer patterns and has determined that there is minimal deception involved.
- Our engine has discovered that over 80% high quality reviews are present.
- This product had a total of 145 reviews as of our last analysis date on Feb 15 2025.
Helpful InsightsBETA
Posted by a reviewer on Amazon
Theyre not 34itll do34 straight but theyre beyond my ability to tell that they arent bent
Posted by a reviewer on Amazon
Thats way more than i can say for other linear rails ive gotten
Posted by a reviewer on Amazon
I had seen other reviews on here talking about the roughness of the rail
Posted by a reviewer on Amazon
I knew i was probably going to face the same issues but it was not that big of a deal
Posted by a reviewer on Amazon
Even after a lot of oil lubrication it still is pretty stiffly moving
Posted by a reviewer on Amazon
I had to remove the sled piece from the rail to attach my extruder from my ender 3 to it
Posted by a reviewer on Amazon
A couple bearings fell out in this process
Posted by a reviewer on Amazon
Luckily i found them and put them back in
Review Count History
Price History
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