Dim3nsioneer
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Posts posted by Dim3nsioneer
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Due to some tests I did today for checking a faster way of the retraction and priming procedure (cf. http://umforum.ultimaker.com/index.php?/topic/4094-raised-edges/page-2&do=findComment&comment=33433) I had a look into the Marlin planner (planner.cpp).
Maybe I got it wrong... is it true that there is only one velocity (I'm aware of nominal speed vs. initial speed vs. final speed of the block) calculated per block for all four axes (X,Y,Z,E)?
What kind of strange reason is there to prevent parallel independent actions of e.g. the x/y axes and the extruder?
If you use a G0 or G1 with both X/Y and E specified, the lower jerk value (which is the one of the extruder) slows down the x/y movement!
If I look at this part of the Marlin code I get the impression it is somehow a bit crappy difficult to understand (edited due to inadequate wording). It definitively has not the same level (also in terms of documentation) as other parts of Marlin which are well commented und well structured.
I.m.h.o. blocks (the trapezoids respectively) should be calculated individually for each of the four dimensions X,Y,Z,E with a coupling between X and Y. But to implement this properly, it would need quite some effort I fear...
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Na, das sind Mal tolle Neuigkeiten...
Ich würde direkt bei Ultimaking bestellen - die liefern ja weltweit.
Wer sich mit der Idee anfreunden kann, einen 3D Drucker nach Anleitung selber zu bauen, ist nach wie vor mit dem Original Kit sehr gut bedient. Habe bereits mein zweites bestellt, wurde innerhalb einer Woche nach Bestellungseingang geliefert. In die Schweiz, mit Zoll und allen Feinigkeiten...
Sogar noch besser bedient... einerseits mit der aktuellen Preisreduktion und andererseits mit dem inbegriffenen Doodle3D-Adapter. Tja, der UM2 kann definitiv (noch) nicht übers WLAN...
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With British Rail? It will hardly survive...
No, seriously... I never moved mine around in public but I don't see any big problems. I would also dismount the Bowden tube and the feeder block. The most delicate part then will be the bottom with the electronics. Maybe you can mount some cardboard with tape on the bottom. I guess you don't even need to fix the printhead.
Wrapping some plastic foil around the UM1 might be a good idea because of humidity, making sure the plywood doesn't warp.
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I think Ian is absolutely right. A small company cannot upscale their production by any factor. Parts have to be ordered and paid. This blocks quite some money which a small company usually doesn't have in large amounts if they want to stay independent. So they only can order limited quantities at a time.
Pure speculation, no offense: It could even be that UM pays the bills for parts with the money they get from the customers for the printers which include excactly these parts; at least partially. If this is the case, lead time is not expected to go down very soon. But at some point it should...
And don't forget that 30 UM2 were 'lost' to production two weeks ago...
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Your wish has already come true...
TweakAtZ version 3.1 allows you to select height also by layer no. You're welcome to test it. For documentation and download, please check the http://wiki.ultimaker.com/CuraPlugin:_TweaktAtZ.
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Is there any reason not to implement a design similar to the one of the UM1 with a wheel pushing from the left directly onto the knurled bolt/axis?
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The wiki page of TweakAtZ has been updated with version 3.1.
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oh you misunderstood me! i dont have an UM2. Only the original.
And i discovered a strange thing: only when the y axis is moving (with the stepper driver) at a high speed it makes this noise and when theres no power i can move the y axis quiet easier than the x axis and also makes a higher pitched sound
Is it just at certain velocities (around 20-25mm/s)? I have a similar effect on one axis since I changed to direct drive. But I think it's some kind of resonance in my case...
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The good thing about special offers is, that it's cheaper. The bad thing about special offers is, that after some time, it gets even cheaper...
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Hi owen
Thanks for the feedback. I just tested your values on Cura 14.01, just with a different stl, and it worked. I will try to test it with Cura 14.02-test.
In the meantime, you may do me a favor. Could you please check the 'output.txt' in your Cura installation folder after having used the plugin and having closed Cura? The last line should then say 'Closing down'. If it says something else, an error occured. This would be interesting to know.
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As nobody has complained about TweakAtZ 3.1-test, it seems it can be released. If anyone had any issues so far, please report them now. I would also appreciate some positive feedbacks...
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Sounds to me like a problem with the right fan. Is it running?
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Thanks for your feedback. The easiest way to achieve this is to load the plugin twice, once for the bottom layer and once for the top layer (each with the individual settings). Please let me know if this slows Cura down too much on your computer.
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Support material and support techniques in FFF (fused filament fabrication) are indeed a never ending story, I think. And many results are everything else than satisfying. So I can understand your anger having invested quite an amount of time.
When I started with my Ultimaker I did one or two tests with the Cura support structure with awful results and large difficulties. So I decided this is not the way to go.
In the meantime I had some very nice experiences with the Meshmixer support. If you don't know it yet, this thread might interest you: http://umforum.ultimaker.com/index.php?/topic/3880-meshmixer-20-a-better-way-to-generate-support
However, don't expect a one-klick-solution, this software still needs some tweaking. But there is a real chance to get a reasonable result.
For a real one-click-solution I see only two possibilities without having actually tested any of the two:
- support with a soluble material such as PVA
- using a different 3D print technique such as e.g. SLS/SLM
So why are there not more innovative solutions for support structure in FFF? I think the patent situation is quite critical concerning support. Large companies have issued patents which block some very interesting developments. So I guess Cura has to focus on solutions which are non-critical in terms of patents but also very rudimentary...
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Because of the lever principle?
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Eventuell wird das Ergebnis besser, wenn Du die Temperatur reduzierst. Allerdings musst Du dann auch die Geschwindigkeit anpassen. Unter Cura steht Dir dafür u.a. das TweakAtZ-Plugin zur Verfügung.
Die Ursache für die Unregelmässigkeiten in diesem Bereich ist ein starkes Umstülpen der gedruckten Randlinien. Vor nicht allzu langer Zeit wurde http://umforum.ultimaker.com/index.php?/topic/4094-raised-edges/.
Wenn Du selbst Modelle erstellst, achte darauf, den Winkel von der Vertikalen so klein wie möglich zu halten; so ab 45° fangen typischerweise diese Qualitätsprobleme an.
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Ein klein wenig Maschinenoel auf den x-y-8mm-Achsen kann nicht schaden. Keinesfalls sollten sie komplett entfettet betrieben werden, da es sich nicht um rostfreien Stahl handelt. Ab und zu etwas nachoelen, wenn es trocken aussieht. Bei Auslieferung sind sie aber schon ganz leicht eingefettet; also keine Panik... :wink:
Die schmalen x-y-Achsen durch den Druckkopf brauchen meiner Meinung nach keine Schmierung, da sie durch Linearkugellager laufen.
Bei der z-Achse ist eine gründliche Reinigung von Zeit zu Zeit angesagt. Dort gibt es Abrieb, der beseitigt werden sollte. Dringende Hinweise darauf sind, wenn die Achse plötzlich unregelmässige Abstände macht. Ich habe bis jetzt gute Erfahrung mit Fahrrad-Ketten-Entfetter zur Reinigung und anschliessender Schmierung mit WD40 gemacht.
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Cura might have a problem with 0.4mm thin walls. There are some ways to get reasonable results for thin walled thin boxes etc. You have to set infill to 0. Thin walls have been a subject in the forum before, e.g. http://umforum.ultimaker.com/index.php?/topic/3044-problem-with-stretchlet-stl, maybe you will find other threads too.
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[..]
Also, it takes AGES for the Basalt bed to cool down. From 100°C to 25°C takes much more than an hour. This is especially bad if you want to change the bed temperature during the print - it takes extremely long to adjust even for just 5-10K downwards.
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Did you switch on the fan? Also with just a tiny airflow you can raise the heat transfer rate easily by a factor of something like 6 compared to air in rest.
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Maybe the 'old' M codes work if the flavor is set to 'RepRap'? I could imagine that the flag ';UltiGCode' defines the set of codes used by UM2Marlin. But it's just a shot in the dark, without having a serious look at any Marlin code... But for the time being it might be a way to use the plugin?
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There was an issue with the package, see https://github.com/daid/Cura/issues/699. That's why the download link was withdrawn by Daid.
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Hi together
There are new versions of two Cura plugins.
I guess I don't have to introduce the 'Tweak At Z' plugin, it is well-known. Version 3.1-test brings the following modifications:
- It is now possible to tweak the fan speed too
- It is now possible to select the tweak height alternatively by layer number instead of height in mm.
- The plugin recognizes UltiGCode. In this case the plugin does not reset tweaked values when a second object is started during the same print job.
- It should be a bit faster than the previous version.
The download link can be found on the http://wiki.ultimaker.com/CuraPlugin:_TweaktAtZ.
I would be happy to receive some feedback from those who use the test version. In a positive case I can remove the test label soon and update the Wiki page.
The second new version is for the plugin 'Combine While Retracting'. Maybe some of you have not yet heard of that plugin. It is about preventing combing on horizontal top layers which results in nasty lines on the finished print. A first test version has been published in http://umforum.ultimaker.com/index.php?/topic/3763-improving-surface-finish/ which was the origin of that plugin. A description of the plugin can be found in the http://wiki.ultimaker.com/CuraPlugin:_RetractWhileCombing. You will also find the download link there.
Please note: the version labelling follows the same logic as the version labelling for Cura, but it will not necessarily be updated when a new Cura version is out (unless there is a reason to update it).
Issues and suggestions for future development are welcome either https://github.com/Dim3nsioneer/Cura-Plugins/issues or in this thread.
Enjoy the new versions!
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This is a problem for other technologies as well such as injection molds where you have to have the mold with a different angle of the part so that after it shrinks the angles shrink to 90 degrees. Weird stuff like that.
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The slicer software which could do such corrections automatically would wipe all other slicer software away... (@Daid: I'm aware that this is very far away! :smile: ) But just imagine...
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Top layer - Cura should pay extra attention to the top layer, ensuring it doesn't drag the nozzle across all the beautifully made parallel lines. Fills the top layer at 1/4 infil speed so underextrusion which is often so present in the top layers is minimized.
This might be achieved in some cases with a combination of the TweakAtZ plugin and another plugin (post 13 in this thread). Depends on the geometry.
Temp sensor LED lights when moving the head!
in UltiMaker 3D printers
Posted
But only in one direction for each axis...