Re: Resolution along X and Y vs Z: are belts precise enough? May 29, 2015 08:05PM |
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Re: Resolution along X and Y vs Z: are belts precise enough? May 29, 2015 08:10PM |
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AndrewBCN
I guess I will have to test a couple of toothed pulleys in one of my printers to verify this. Here is a vertical flat surface and indeed, one can see a very faint vertical wave pattern. I confess I never paid any attention to this because the vertical wave pattern cannot be felt by running a fingernail along the surface, contrarily to the horizontal pattern formed by the layers themselves:
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the_digital_dentist
I have a 0.25mm nozzle that I'll put on the machine one of these days and then I'll calibrate the extruder at 20 or 50 um and try a small print.
Re: Resolution along X and Y vs Z: are belts precise enough? May 29, 2015 08:16PM |
Admin Registered: 12 years ago Posts: 1,063 |
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AndrewBCN
@ Viktor,
Interesting!
I guess I will have to test a couple of toothed pulleys in one of my printers to verify this. Here is a vertical flat surface and indeed, one can see a very faint vertical wave pattern. I confess I never paid any attention to this because the vertical wave pattern cannot be felt by running a fingernail along the surface, contrarily to the horizontal pattern formed by the layers themselves:
Re: Resolution along X and Y vs Z: are belts precise enough? May 29, 2015 08:17PM |
Registered: 9 years ago Posts: 977 |
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cristian
...
But belts are elastic, no matter how taut they are.
...
Re: Resolution along X and Y vs Z: are belts precise enough? May 29, 2015 08:20PM |
Registered: 9 years ago Posts: 977 |
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JamesK
Excellent! Can we get a measurement of the pitch? 1mm would be a smoking gun I think (each side of the bearing, assuming out of phase and 2mm pitch belt).
Re: Resolution along X and Y vs Z: are belts precise enough? May 29, 2015 08:22PM |
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Re: Resolution along X and Y vs Z: are belts precise enough? May 29, 2015 08:26PM |
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cristian
Quote
AndrewBCN
I guess I will have to test a couple of toothed pulleys in one of my printers to verify this. Here is a vertical flat surface and indeed, one can see a very faint vertical wave pattern. I confess I never paid any attention to this because the vertical wave pattern cannot be felt by running a fingernail along the surface, contrarily to the horizontal pattern formed by the layers themselves:
That is exactly the pattern I was referring to, which does not depend on vibration following direction changes. If you have the chance to do such a test, I would be thankful if you may post online the results too.
...
Re: Resolution along X and Y vs Z: are belts precise enough? May 29, 2015 08:28PM |
Registered: 9 years ago Posts: 344 |
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AndrewBCN
Even steel is somewhat elastic
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AndrewBCN
All I am saying is that GT2 belt driven linear motion systems can hardly be considered to be at the top of the list of factors that contribute to a lack of precision of a 3D printer, given the current stage of development of 3d printing / FDM technology. I agree with jollygrimreaper here, I don't think GT2 belts are worth you worrying about at this stage. But of course it always makes for an interesting discussion!
No problem, thank you in any case.Quote
AndrewBCN
I will certainly post the before/after pictures, but note that it will take me some time to schedule the switch from flat to toothed pulleys on my next printer build.
Re: Resolution along X and Y vs Z: are belts precise enough? May 29, 2015 10:23PM |
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Re: Resolution along X and Y vs Z: are belts precise enough? May 30, 2015 03:14AM |
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Re: Resolution along X and Y vs Z: are belts precise enough? May 30, 2015 03:54AM |
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Triffid Hunter's Calibration Guide | --> X <-- Drill for new Monitor | Most important Gcode. |
Re: Resolution along X and Y vs Z: are belts precise enough? May 30, 2015 07:54AM |
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thejollygrimreaper
you can see the vertical ridges lining up roughly where in the infil connects to the perimeter, i think based on this that the vertical ridges are a product of (1) the perimeter speed (2) the infil density (3) and also the number of perimeters as more perimeters would mitigate any effect from the infill
Re: Resolution along X and Y vs Z: are belts precise enough? May 30, 2015 09:47AM |
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Re: Resolution along X and Y vs Z: are belts precise enough? May 30, 2015 09:55AM |
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Re: Resolution along X and Y vs Z: are belts precise enough? May 30, 2015 10:35AM |
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Re: Resolution along X and Y vs Z: are belts precise enough? May 30, 2015 01:26PM |
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Re: Resolution along X and Y vs Z: are belts precise enough? May 30, 2015 01:34PM |
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Re: Resolution along X and Y vs Z: are belts precise enough? May 30, 2015 01:38PM |
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Re: Resolution along X and Y vs Z: are belts precise enough? May 30, 2015 01:45PM |
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Re: Resolution along X and Y vs Z: are belts precise enough? May 30, 2015 01:46PM |
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Re: Resolution along X and Y vs Z: are belts precise enough? May 30, 2015 01:54PM |
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Re: Resolution along X and Y vs Z: are belts precise enough? May 30, 2015 02:21PM |
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Re: Resolution along X and Y vs Z: are belts precise enough? May 30, 2015 02:28PM |
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Re: Resolution along X and Y vs Z: are belts precise enough? May 30, 2015 03:22PM |
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the_digital_dentist
Have you considered the possibility that the small waves are due to the extruder motor steps? Is it a direct drive extruder or is it geared?
Re: Resolution along X and Y vs Z: are belts precise enough? May 30, 2015 04:33PM |
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Re: Resolution along X and Y vs Z: are belts precise enough? May 30, 2015 11:09PM |
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Triffid Hunter's Calibration Guide | --> X <-- Drill for new Monitor | Most important Gcode. |
Re: Resolution along X and Y vs Z: are belts precise enough? May 31, 2015 01:18AM |
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Re: Resolution along X and Y vs Z: are belts precise enough? May 31, 2015 03:53AM |
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Re: Resolution along X and Y vs Z: are belts precise enough? May 31, 2015 11:10AM |
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