Use this tag for questions about one-dimensional motion along a straight line.
Most printers use some form of linear motion (even delta printers use linear motion) to drive the various axes.
Questions tagged [linear-motion]
26 questions
18
votes
2 answers
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
- 4,687
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9
votes
1 answer
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
- 223
- 2
- 5
6
votes
1 answer
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
- 653
- 3
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- 14
6
votes
5 answers
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
- 289
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- 7
5
votes
2 answers
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
- 457
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- 4
- 14
4
votes
1 answer
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
- 93
- 4
3
votes
2 answers
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
- 131
- 3
2
votes
1 answer
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
- 95
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2
votes
2 answers
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
- 41
- 5
2
votes
1 answer
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
- 153
- 4
2
votes
3 answers
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
- 413
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1
vote
0 answers
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
- 653
- 3
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- 14
1
vote
1 answer
CraftBot XL (CoreXY) part of x-axis movement resistance / high force required
I have recently acquired a 'CraftBot XL' 3D printer (sold by CraftUnique), which is a CoreXY 3D printer with linear rails. It is a second-hand purchase and the seller were a company that had several. This particular unit has an issue where sometimes…
Floris
- 133
- 5
1
vote
1 answer
Can I lubricate the timing belts to prevent squeaking against pulleys?
My CoreXY style printer doesn't have perfect belt alignment with its pullies, so there is some occasional squeaking on at least one pulley where the belt rubs against a flange. Since I don't have an easy way of adjusting the pulleys (maybe some tiny…
Mandias
- 195
- 7
1
vote
1 answer
How should I implement the Z-axis in a fixed build plate 3D printer?
I'm working on a project where I have to design a Cartesian 3D concrete paste printer, in which I aim to make the build plate fixed with a 500 mm × 500 mm build area. But I'm confused as to how I should implement the motion of the Z-axis. I am…
Elias
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