3D Printing Stack Exchange
3D Printing Stack Exchange

Questions tagged [linear-motion]

Use this tag for questions about one-dimensional motion along a straight line.

Most printers use some form of linear motion (even printers use linear motion) to drive the various axes.

23 questions
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Why all the excitement about linear rails?

Whenever a 3D printer that uses linear rails is announced (case in point: the cetus), the Internet (well... at least that corner of it dealing with 3D printing) gets abuzz with excitement. I researched a bit the topic myself, and while I understand…
mac
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What do linear rail codes mean?

In looking at 3D printer motions systems, I've seen linear rails with codes like MGN15H and MGN9C. What do the letters and numbers mean?
chobok
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Which is a more accurate linear motion system?

If someone looking for accuracy, which is the better linear motion system: Maker slide, Smooth rod - bearing, Linear guide way, V slot, Open rail Please let me know if there's a better one other than above list.
Athul
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Polyurethane-and-steel timing belts?

Has anyone tried the steel-reinforced polyurethane timing belts? If so, how do they compare to the rubber ones?
nebogipfel
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What grease to use for linear rails?

What grease to use on linear rails to make them stick as little as possible? I've tried so far: WD40 (let’s not start a discussion about that please), silicon spray and some bearing grease called ‘motorex’, but with all of them the rails stick…
matthias_buehlmann
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4
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Clearance between moving parts

I am using a Prusa printer to print parts for prototyping. The project I am currently working on needs parts to be able to slide against each other and they need to be printed together. A bit like these gears, where the whole construction needs to…
Erik
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Use external sensor

I'd like to buy a 3D printer and use it as a "platform" for an external optical sensor. The idea is to mount an optical sensor on the Z-axis and to put a workpiece on the X-Y table. Now, I'd like to move the sensor across the workpiece and trigger…
Semoi
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Robotdigg linear guide not smooth motion

I recently bought the MGN12H linear guide and rail from robotdigg, which is supposed to be the copy of the Hiwin. I have noticed that the motion is very smooth when moving fast, but if I move it very slowly, it gets stuck and the motion is not…
Franc Navarro Cifani
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Y-axis on KP3S Kingroon only moves in one direction

I recently got a KP3S Kingroon 3D printer and have been trying to set it up. After a couple of test prints, the Y-axis seems to only move in one direction. At first, I thought it was a motor issue, but when I go into the manual move directions for…
doombringer175
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Which material should I use to print a mounting adapter for the y-carriage?

I have purchased a replacement bed for my 3D printer. I wish to have it mounted on a single linear rail. Currently I am unable to drill properly into aluminum (due to problems with my drill). Therefore, I'd like to print and use an adapter…
Phil
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Classifying method of control of 3D printers?

Is there a classification of method of control most (FDM) 3D printers fall under? From a 1986robotics textbookref I was reading they defined three classes of control: 1) Pick and place 2) Point to point 3) Continuous path However, both point to…
FEA42
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Linear guideway with Ball screw for X, Y ,& Z axes

I'm building a 3D printer for bio medical application and looking for different opinions on motion system. Build volume 400x300x250 mm I'm thinking about using Linear guide way with ball screw Linear guide way with ball screw Would this mechanism be…
Athul
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Are resonances of belt driven carriage strongly direction dependent? Mitigations?

So, backstory: I setup a tuning print for Klipper input shaper that makes use of matched speed projected onto the opposite axis at junctions, and high instantaneous junction velocity (scv), to allow them to be taken in a way that only one axis…
R.. GitHub STOP HELPING ICE
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Should I Opt For Linear Rails With Belts OR Linear Rails With Ball Screws For A Cartesian Style Printer?

I am building a medium-sized printer which needs to produce super-precise parts at a moderately fast print time. I frankly don't want to deal with belts or their tension issues but on the other hand, having ball screws on each axis will increase…
Faraz Ahmed
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Linear rails maintenace

On my delta printer I have linear rails and one of them (rail+block) started squeeking while printing. I have thought about these causes: 1) the rails are not lubricated well enough, they were always lubricated from the outside (grease put on rail)…
TurgonTheKingOfGondolin
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