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UM² Printing more than 24 hours non-stop


geeks

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Posted · UM² Printing more than 24 hours non-stop

Hello,

 

I have to make large parts for a model. It is that time of Cura told me more than 24 hours / parts. I fear more than the machine does not take the time to print without problems.

 

What advice would you give me to avoid problems and make these great prints?

 

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    Posted · UM² Printing more than 24 hours non-stop

    I have done prints > 24 hours. And I had a failure (nozzle clog) on one. I was able to continue the print - it was on the UM2 with heated bed so the most important advice is to keep the bed hot and don't panic. You can wait a few hours before continuing. If the bed had cooled the part would have popped off the bed.

    To continue the print I had to use pronterface to move the Z axis up and down until I found the exact layer that had just finished. Then I had to edit the gcode - deleting all the begining part and adding a G92 code for the Z axis. Let me know if you need more details.

     

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    Posted · UM² Printing more than 24 hours non-stop

    Ah yes! Indeed! :oops:

     

    Okay, so there it makes me even more scared. :oops:

     

    A nice solution would be to 2h printing with a first file.

    2 hours more with a second file.

     

    And so on.

     

    Except that. If I do that, how to make this task automatically. I do not Pronterface.

     

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    Posted · UM² Printing more than 24 hours non-stop

    1) It helps if you can break up a part into multiple pieces and print them separately like this one which is split into 4 pieces:

    http://www.thingiverse.com/thing:268757/#files

     

    2) Pronterface is free and useful for experiments and tests and fine control. For example if you want to experiment with different accelerations on the Z axis:

    http://koti.kapsi.fi/~kliment/printrun/

     

    3) Don't worry so much. Just start printing. Understand that if it fails part way through then:

    A: Don't let the bed cool!

    B: Understand that you can continue it later. You can even wait a few days.

     

    More details here:

    http://umforum.ultimaker.com/index.php?/topic/4213-ideas-for-recovering-failed-prints/

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    Posted · UM² Printing more than 24 hours non-stop

    Ok Here I completely understand!

     

    So for me, step 1 would be to do a test on a small piece.

     

    That should be used as gcode for:

    1 / Start printing

    2 / gcode Part 1 Part

    3 / Stop print, plate movement and nozzle

     

    Repeat as many times as chip parts.

     

    I'm sorry but I'm still too novice To approach to re-code gcode under UM ².

     

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    Posted · UM² Printing more than 24 hours non-stop

    The best thing might be to take a small sample piece to be cut in two and tested. Finally when I could understand the minimum sequence.

     

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    Posted · UM² Printing more than 24 hours non-stop

    Talking about this example:

    https://drive.google.com/file/d/0B8rzHF-dEgkdQWNvblNIYjR4Ums/edit?usp=sharing

    It will be more easy!

     

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    Posted · UM² Printing more than 24 hours non-stop

    It would be less reader-hostile to post the gcode as a downloadable file instead of as embedded text.

     

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    Posted · UM² Printing more than 24 hours non-stop

    So for example, in your gcode above, if you wanted to continue at layer 48 (z=5.1mm) you would delete everything up to layer 48 and start the gcode with this little snippet:


    ;FLAVOR:UltiGCode
    ;TIME:1360
    ;MATERIAL:2282
    ;MATERIAL2:0
    ;Layer count: 78
    ;LAYER:0
    G0 F9000 X0 Y0 Z5.1 ; home head and move straight up so as not to hit part
    G11 ;unretract
    M106 S255 ; fan on full - not sure if this is smart
    G92 E1749.75789 ;very important step - this is the last extruder position on layer 47
    ;From here on nothing is changed...
    ;LAYER:48
    G0 F9000 X134.40 Y120.90 Z5.10
    ;TYPE:WALL-INNER
    G1 F3000 X95.60 Y120.90 E1751.30989
    G1 X95.60 Y119.10 E1751.38189

    The important two steps are to move Z to where the next layer starts (5.1mm up) and to zero the extruder at the current extrusion amount (1749.75789mm of filament).

     

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    Posted · UM² Printing more than 24 hours non-stop

    Ok to restart from a certain layer. But how to stop layer 77?

     

    It must be said that the head emerges from the present case.

     

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    Posted · UM² Printing more than 24 hours non-stop

    But how to stop layer 77?

    Hit power switch.

    You misunderstand. We are talking about 2 different things:

    1) It is possible to break a part up into multiple sub parts using CAD software. Then print the different sub parts. You have to choose carefully where to break up your part.

    2) If a print fails, you can continue where you left off with my explanation above.

     

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    Posted · UM² Printing more than 24 hours non-stop

    Ah!

     

    We are talking about two different things! Ok!

     

    I find temporary solution. I will print smaller parts. When the concept is good, I'll do the draw on an online service to have things to clean up on the final prototype.

     

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    Posted · UM² Printing more than 24 hours non-stop

    Why not just print it? The longest print I've done so far was 48 hours, and so long as I made sure the filament (on the floor) was loose and untangled every 6-8 hours, it ran just fine.

     

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    Posted · UM² Printing more than 24 hours non-stop

    Exactly! When I see what I see!

     

    So in the end, I actually realize myself parts. I'm good for 24 half-shells.

     

    To this day, I make exact copies of the original 50%. Everything is beautifully past and I do not see what would block this achievement.

     

    I would put up a picture of miniature parts. I can attack a version courira 24 and older.

     

    Thank you for this information illuminarti. That shows that it is feasible.

     

    A track that I have not explored this is agmenter layer thickness. I guess it is more restrictive. I must remain faithful Tred and high quality. I can not afford to fail.

     

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