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lukem96

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Posts posted by lukem96

    Grinding??

    in Improve your 3D prints

    Posted

    I am still not convinced its just the PFTE, as i have had made the hole bigger, and the filament is getting jammed after it goes through the PFTE just before it comes out the nozzle, if i take the pfte out and try push filament through it still doesn't come out, any suggestions?

    Grinding??

    in Improve your 3D prints

    Posted

    gr 5 i think my original problem was too many retractions but where the print kept failing i think it caused more problems in the nozzle. Yes i did try it, i think it did work better but i was still having problems so it was hard to tell, but does make sense.

    I have done just over 1000 hours so yes the pfte is due to be changed.

    I've got the head all open, its the part where the pfte goes into, under where that would be i can feel melted plastic in there, just having trouble getting it out.

    Thank you very much!

    Grinding??

    in Improve your 3D prints

    Posted

    Thanks for the help really appreciate it!

    I've taken the nozzle apart and got the PFTE and it doesn't really look deformed, its a bit burnt but the structure doesn't look damaged, I've ordered a nozzle bundle thing that has the PFTE in so will try that, but it looks like its more to do with the block of metal that heats up, whats the best way to properly clean this?

    Grinding??

    in Improve your 3D prints

    Posted

    Oh damn, mine looks nothing like that bottom one:(

    i put it in at 200, push it through for a bit, then put it to 90, keep pushing till its at like 140, then wait for it to go to 90 then pull it out, some times if i leave it in there too long its really hard to pull out and the filament breaks.

    Does my one look like a bad ptfe?

    Grinding??

    in Improve your 3D prints

    Posted

    I have done atomic pulls, i have cleaning filament as well, and i have put some thin metal wire up the nozzle to clear anything out of there, and no luck. What is it you specifically want to look at on the filament?

    Thanks!

    Grinding??

    in Improve your 3D prints

    Posted

    Thank you for the help i really appreciate it.

    I am printing 0.4mm nozzle

    layer height 0.06mm

    bottom layer 10mm/s

    infill 80 mm/s

    top/bottom 15mm/s

    outer 30 mm/s

    inner 60 mm/s

    printing at 215 degrees

    Using reprap Uv sensitive PLA

    2.85mm

    I will try the retractions, thank you

    Grinding??

    in Improve your 3D prints

    Posted

    I my theory is correct which only an assumption.

    For the experiment I would put a fan blowing towards the feeder motor just to make sure it is not the temperature of the motor influencing you results since the first print is fine.

     

    I have taken the white box off and blown a fan on it, it still happens:( thank you so much for the support guys! having so many problems:(

    Grinding??

    in Improve your 3D prints

    Posted

    In order to have a good first layer the layer needs to be pressed onto the platform. I guess you have leveled your bed to fulfill that requirement (which is good). It might be that due to printing the first object the feeder is now hot and possibly not able to build up the pressure needed to print the first layer. When you normally start the feeder is cold. Due to the direct drive of the UM2 feeder the warm motor can warmup the bold that drives the filament and giving the nature of PLA this might lead to the issues you have.

     

    It prints the first layer, its the 2nd layer where it fails. Thank you for your reply!!

    Grinding??

    in Improve your 3D prints

    Posted

    Ok, can you please explain a bit about the word “grinding”. You say you are not there, so it is not the sound of “grinding” – it must be a visual thing so what is grinding? (can you post a picture?)

    I understand you to be saying that

    1st pass   - model 1 layer 1

             Model 2  layer 1

    2nd Pass    Model 1 layer 2

             Model 2 layer 2

    Etc, etc

    So I do not understand why you say you are asleep and not beside the printer when the 2nd model is failing???

     

    The filament has been grinded so it can no longer grip it to feed so nothing comes out of the nozzle. Basically if i print 2 phone cases at once, the first once prints fine, but the 2nd one prints the first layer then nothing else prints as the filament has been grinded.

    Grinding??

    in Improve your 3D prints

    Posted

    Okay community having massive problems with grinding, i don't think it is the feeder as i have cleaned it, and have adjusted the tension from loose to tight and have had no luck.

    I have the problem when i print 2 objects at once (phone cases)

    One of them print fine, but the 2nd one it does the first layer then starts grinding, this usually happens when i'm asleep or working so cant tell what actually happens, but it happens all the time now when i try and print 2 and have no idea why.

    I've measured the diameter which is fine, i have printed with different temperatures, the fans are working properly, i don't know what else to try, any suggestions?

    How can i get rid of these on my print?

    in Improve your 3D prints

    Posted

    Sometimes I use gluestick to get the first layer to stick, after that things work themselves out, even with Pla and a heated bed

    Worth a try!!!

     

    Already am:( thanks for the suggestion!

    Still have my belt problem though, the belt on the back (the long one) is really lose, and the one on the right hand side (long one) is slightly lose as well. How can i tighten these?

    Thanks!

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