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Showing content with the highest reputation on 08/31/2018 in all areas

  1. Hi Everyone. I wanted to share a little python script I wrote for making time lapse videos with the onboard camera on the Ultimaker 3. Here is an example from a rather messy print I just did. Get it on GitHub. There's probably a lot of generic webcam tools for doing this already, but this one is nice because it doesn't start taking pictures until the printer begins printing, and it stops once the print is completed. The script requires Python 3 and FFmpeg. Usage $ ./timelapse.py HOST DELAY OUTFILE HOST is the IP address of your Ultimaker 3. You can find this through the menu b
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  2. Hi Folks, This topics almost went into the drain, -but actually this is a very important issue for an "FDM Bowden type" printer. When I had to tag this topics, I did not find the "tag" I was looking for, -so I just put up the "one" I have. But the fact is that, this is valid for every Bowden tube printers that's made. So you may ask, what is the issue; -the issue is friction! So, I'll say, friction is the Achilles heel of "FDM Bowden type" 3D printers. Friction in the transfer line some place; -"between the the bowden tube and the filament"!
    1 point
  3. You can also recycle your PVA from printing and make a slurry. I have, at this point, enough PVA to probably supply half of Manhattan with enough dry PVA to make slurry from. Since it is designed to work with the printers, and, I just hate waste like you would not believe, this is my go to solution. I have found that if I add alcohol to it, it makes a thinner, more even bond with the prints and printing surface. I have printed a bar to make a mold from (Have 3 pounds of dry dental alganate waiting for this) and make PVA bars out of so I can give them to people when attending printe
    1 point
  4. All of the glue sticks at the office supply stores and such - anywhere they sell paper and pencils - those are all PVA. Don't worry about additives. elmer's wood glue is great. I'm sure the original elmer's glue would work as well also as it's mostly pva. Those glues are mostly PVA. Hairspray is mostly PVA - (this is a case where I don't like additives because I can't stand the smell after a while). If you use hairspray you need to remove the glass each time you spray which is extra work (you don't want pva getting on the z screw!). One coating of any of these me
    1 point
  5. Is the Bowden tube PTFE on the ultimakers? Shouldn't really show wear from unfilled filaments then. If it isn't that's an easy way to reduce friction even more. I have PTFE liner in one of my welders and there has been many meters of steel and aluminum wire going thru that one over the years without visible wear. The wire feeder is in principle the same as a Bowden. Well written article
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  6. En effet problème résolu en mettant à jour le firmware, merci beaucoup !
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  7. I am making Lithopanes on an ultimaker 3, these days some I am able to make, some break mid way, any thing I can improve on . Some even go up to 120 mm,
    1 point
  8. Es stehen dir dann nur nicht mehr alle Layer Höhen zur Verfügung.
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  9. Ja ich denke schon. Cura müsste eine Warnung anzeigen falls es nicht empfohlen ist.
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  10. Needle files are last or almost last when the power tools have done their bit. Its not being lazy, its valuing your time! You preffer relaxing to sanding......who doesnt? only liars!
    1 point
  11. Effectivement je viens de trouver ces mêmes info (PrintCore AA pour Breakaway) sur le site de Ultimaker et MakerShop. Merci pour ces infos, je vais donc monter en double PrintCore AA 0.4 sur ma UM3 ? ! Du coup les PrintCore BB ne servent vraiment que pour le PVA ou pour d'autres matériaux spécifiques aussi ? EDIT: Je viens de regarder et le BB est donné que pour le PVA sur ces 2 mêmes site.
    1 point
  12. Yes 8 colors is usually good enough. I just was thinking that was a limit of Cura but now it doesn't appear to be a limit. Cura seems to do a good job slicing so trying to take advantage of all that and just add the mixture information as part of a plugin. Assigning a mixture for each virtual extruder, it makes it easy to track the color by the tool in the Gcode Here is a sample video from the company. I'm not sure what they used but don't think it was Cura and they may have just altered some Gcode. I have been working to just make Cura an easy alternative to use.
    1 point
  13. According to the compatibility chart from Ultimaker, this combination has not been tested: https://ultimaker.com/en/resources/49799-material-compatibility But you could start a small test print and see how it behaves.
    1 point
  14. So I did some test parts - and I think I have identified the culprit. See for yourself- first with combing enabled: And the same part, with the same settings (Standard CPE profile, 0.2mm layer height)., but with combing disabled: To be fair, there was quite some stringing with the combing disabled (I removed some of the strings manually before taking the photos), but you can remove the strings quite easily using a heat gun. Personally, I'd choose stringing over those strange crumbs and holes every time.
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  15. Did you already try switching to another infill type? One suggestion I heard is also to disable combing... if I get around to do it, I'm gonna run some test parts, checking some of these things out. BTW, here is the temperature test tower - encourages me to actually print hotter instead of cooler, contrary to the typical PETG advice.
    1 point
  16. If you hover your mouse over the time it will show you how much time is spend on different step like infill, travel, retract... so it will give you an idea where to save time. You might wanna look at you speed to see if it's low, maybe your infill is set too high like if you have 100% infill it will use the top/bottom printing speed and it's often slower than infill speed.
    1 point
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