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OlivierV

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Posts posted by OlivierV

  1. Yep

    This is moisture. There is only so much you can do.

    When you print is the spool covered or fitted to the back?

    Basically you know boiling water creates steam, well as we print twice as hot compared to boiling point the transition is very fast. This can lead to the now gas form of the water to get trapped if the amount is very small. When the amount of moisture is above a certain amount the amount of gas expand where it bursts out of the plastic and that’s the pop.

    There are printable solutions that encase the PVA whilst printing and contains moisture absorption (latter isn’t printable) I have designed one and is on youmagine and thingiverse. It’s bright orange.

    I have designed something better but haven’t tested it yet. But will be available once I have.

    Hi rebekah_harper, thank you for your response. When I print my PVA is on the classic spool holder. It is true that between two prints I do not always store it back in my storage box.

    Thank you for your clear answer.

  2. Hi, I use an UM3, Cura 3.0.3 with default settings.

    When I print some PVA I get this:

    PVA_bubbles2.JPG.a1f0c56f8d6ad96af8405d31fc3a6b71.JPG

    It looks like bubbles in the filament. Before printing the filament is perfect and I store it in a dry storage (plastic box with moisture-absorbing desiccant packs in it).

    Sometimes while printing I can hear some pops.

    I looked at the other topics about PVA and the response is not clear.

    As anyone already solved this issue?

    Thank you!

    PVA_bubbles2.JPG.a1f0c56f8d6ad96af8405d31fc3a6b71.JPG

  3. That is certainly not cool. If you have 2 spools which are not recognized by the printer those spools are defective. Have you asked for new spools? Or have you asked to send you new tags? I can imagine the latter seems optimal, but is not how things work behind the screens.

    Ultimaker is committed to excellent service, and arranges that via a distributed or indirect sales model. I'm sure the reseller that has sold you the UM materials will be able to help you in a satisfactory manner.

    Hello Tomnagel,

    I have asked the french reseller and they said that Ultimaker has not accepted to send a new tag. I found easier to buy a new spool of Black PLA. Now that I have a tag that is recognize I will keep it.

    I also bought a new spool of PVA, now I also have a tag that is recognized.

    Thank you.

  4. are you using the latest version of Cura? There is continuous improvement on the printing profiles, which are shipped with Cura. Especially PVA printing has improved a lot.

    Hi Tomnagel,

    I am using Cura 2.6.2 for win64

    Are you using 2.7 beta?

    Thanks.

  5.  

    This isn't tech support - this is just other UM users helping each other.

    Is it really a big deal (don't get mad - I'm just wondering)?  For me if it doesn't recognize the spool, the printer just asks me and I tell it "PLA".  done.  Easy.  Right?  Or am I missing something.

    Anyway contact the company who sold you the filament if you want a tag.  Eventually however you will probably have dozens of spare junk tags from old spools.

     

    I will try to contact the company who sold the UM spool.

    Are the settings in Black PLA and classic PLA different?

    I looked in Cura and it looks like color does not affect the recomended settings.

    Does color affect the printing settings ?

    Thank you. :)

     

    I have contacted the company who sold the spool.

    They told me that UM disagree about sending a tag.

    What is not cool is :

    1- their is no way to tell the UM3 that this unrecognized spool is black PLA

    2- if you set PLA on the UM3 you get a wrong color in Cura

    3- if you modify the color in Cura you get an error message every time you print via Cura

    4- their is absolutely no way to contact UM if you are a customer (community is not direct support)

    5- on 5 spool 2 are unrecognized (tag is seen but not attributed to any material)

    I understood that this does not affect the quality of printing and the UM3 is very good printer. Why creating a NFC tag if the spool are not recognized ?

  6. @OlivierV: Did you check what the NFC reader test in the diagnostics menu (submenu of maintenance, submenu of system) says about that spool? Does it see the tag? Does it write "UNKNOWN" below the tag id?

    Hi Dim3nsioneer,

    You are right! I found the menu and my UM3 show me a TAG number and write "UNKNOWN" below the tag ID.

    Can I now associate the TAG ID to standard UM Black PLA?

    Thank you for your help :)

  7. Um.  Email sales _at_ 3dsolex.com to find out about if acetone will hurt ICE coating.  I don't know.  But it won't hurt non-ICE nozzles as I have used acetone before.  I find it easier to heat a nozzle over a gas flame.  I put a drop of water on it, then heat in flame and count how many seconds until water is boiled away (about 8)then wait the same amount of time additionally and then remove from heat and use paper towels and wooden toothpicks.  

    sometimes I have a piece of filament handy as well to test the nozzle with.  And a needle.

    Sometimes I just burn it to 500C or so and turn all that plastic to carbon.

    But yes you should be able to soak it for a few hours in acetone as well.

    Thank you for this answer. It is very clear. :)

  8. Cura profiles have the ability to have different settings for different colors but - there are already too many combinations (something like 4 core types X 5? materials X 4 quality settings X 2 cores) that adding color to the mix will make it difficult I think.

    Anyway as of august 2017 there are no profiles related to color.  All the cura settings (speed, temperature, fan, etc) are the same for all the colors.

    This is exactly the answer I was waiting for. It is very clear. Thank you gr5. :)

  9. Is it possible to put an ICE nozzle on my classic ultimaker printcore?

    I think that the nozzle cannot be removed from an UM printcore. Is that correct?

    You are correct that you have to also buy the hardcore printcore from 3dsolex. So it's a big expense for just getting the ice coating.  I'm not sure if it's worth it or not.  On the other hand if you were thinking about buying a .8mm core anyway then you can save your money and get the 3dsolex and get other nozzle sizes: .25 .4 .6 .8.  I sell 3dsolex products in USA so I am a bit biased.

    Thank you for your answer gr5.

    With the 3dsolex printcore, because you can remove the nozzle it should be easier to clean.

    Can you then drop your nozzles in Acetone or any other chemical product that will melt the plastic?

    Or will it damage the nozzle?

  10. Have you tried an ooze shield?

    Hi Kmanstudios, I didn't knew about that option, it was hidden by default in Cura. Thank you for your idea. I found some videos on YouTube and also the parameter in Preference/Configure Cura/Settings/Dual extrusion/ Enable ooze shield!

    I will try that! :)

  11. This isn't tech support - this is just other UM users helping each other.

    Is it really a big deal (don't get mad - I'm just wondering)?  For me if it doesn't recognize the spool, the printer just asks me and I tell it "PLA".  done.  Easy.  Right?  Or am I missing something.

    Anyway contact the company who sold you the filament if you want a tag.  Eventually however you will probably have dozens of spare junk tags from old spools.

    I will try to contact the company who sold the UM spool.

    Are the settings in Black PLA and classic PLA different?

    I looked in Cura and it looks like color does not affect the recomended settings.

    Does color affect the printing settings ?

    Thank you. :)

  12. I get some of that but not a lot.  It's only a problem for me with white filament where you occasionally get a brown spot in the model when it drips off the nozzle.

    You could try a 3dsolex print core with an ICE nozzle.  The ICE coating should keep any filament from sticking to the nozzle.  I'm not sure if this solution is worth the cost though.

    I find it's easiest to clean the nozzle by heating to about 175C (150C is hot enough also) and then just wiping it off with paper napkin/tissue.  Even the black gunk comes off.  Don't apply huge forces (don't use tools) as you can break the core at the delicate heat break.  Normal finger forces should be fine.

    Thank you gr5. :)

    I will see if I can dig a budget for a 3dsolex print core with an ICE nozzle.

    Is it possible to put an ICE nozzle on my classic ultimaker printcore?

    I think that the nozzle cannot be removed from an UM printcore. Is that correct?

    Before having this great upgrade I will heat my nozzle at 175°C and gently use a tissue to clean it. ;)

  13. My biggest problem with the worms is they sometimes cause holes in the wall of my model after they are dissolved.

    A wipe tower helps but has learning curve.  Mostly I suggest put the wipe tower in the back center as it is less likely to fall over there.  Wipe towers tend not to stick well in the back corners.

    Thank you gr5, I will try to use a wipe tower and will put it in the back center.

    :)

  14. Hello,

    My Ultimaker 3 is printing very well.

    When I print with PVA it creates a lot of worms stucked on the external surfaces of the support.

    It is not really a big problem but sometimes it prevent the support to be perfectly printed because those worms gets draged by the nozzle and hit the printed material.

    Thank you.

  15. Hello,

    I have a UM3, it prints perfectly but a ton of plastics gets glue on the external conical surface of my nozzles.

    How can I avoid that some plastic goes backward / twist to that surface?

    If it is not possible, what would you suggest to easily clean this surface?

    At one point it gets so dirty that a big pile of plastic prevent the printing to be accurate.

    Thank you.

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