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Beta? printer build

Discussion in 'Projects' started by feralsteph, Feb 12, 2021.

  1. feralsteph

    feralsteph Member

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    So... Because I'm impatient and couldn't wait until I was done with work, I pulled the thermistor out and all the wiring etc for it and tested it just to ensure it did infact work and yep...itworks.!

    So now to work out how it was shorting when installed. But that can wait a little
     
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  2. feralsteph

    feralsteph Member

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    Pulled it apart and did some testing and....it was shorting on the screw that hold it in place!
    So after some fiddling got it back in seated all good. Then I went to assemble to rest of the printer again and....the thermistor came out again! Gah!

    And the Ender 3 cracked the shits at me too so I'm a little frustrated with the printers at the moment.

    Will try again later.
     
  3. mark tomlinson

    mark tomlinson ༼ つ ◕_ ◕ ༽つ
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  4. mark tomlinson

    mark tomlinson ༼ つ ◕_ ◕ ༽つ
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  5. feralsteph

    feralsteph Member

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    That is a great idea!!!! Just ordered some kapton tape and will give that a go when it arrives.

    Never would have thought of that, thanks!!!
     
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  6. mark tomlinson

    mark tomlinson ༼ つ ◕_ ◕ ༽つ
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    The good news is it will not damage the hotend and if you need to take it off a small craft razor will jhandle it.
     
  7. feralsteph

    feralsteph Member

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    As previously stated, I'm impatient so carefully fitted the thermistor so it wasn't shorting and put it back together to do a test print. And it worked! Happy days. Though it seems to be underextruding...so now need to sort that issue out. Have already ruled out esteps as they seem accurate.

    Back to researching but glad the printer at least works again.
     
  8. mark tomlinson

    mark tomlinson ༼ つ ◕_ ◕ ༽つ
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    Make sure that the nozzle is not oversized from age (the filament will wear a brass nozzle larger over time and will mess up your extrusion eventually just like bad esteps). I have had brass 0.4 nozzle wear out to 0.7 ;) Worth a check... Or just swap in a new nozzle (the brass ones are cheap enough).
     
  9. feralsteph

    feralsteph Member

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    Good point.
    I wouldn't think so as it's a new nozzle that came with the hotend - but will definitely check it to make sure (and make sure I didn't accidentally put a larger one on!
     
  10. mark tomlinson

    mark tomlinson ༼ つ ◕_ ◕ ༽つ
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    OK, if you recently replaced it then it is likely good.
    Try printing a few degrees hotter -- it might just be the filament is not quite in full plastic flow mode.

    I am coming up empty on any other obvious way that could happen :)
     
  11. feralsteph

    feralsteph Member

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    Alright! I am at a loss.

    I am currently massively regretting my upgrade as I haven't been able to print anything decent since. And considering reverting back. But first I do want to try some more - because I haven't tried all that much.

    My prints are turning out crap and I have z-banding again. I had lines missing in the prints, but dried the filament and it clearer up mostly. I'm trying now with some white pla+ and did a benchy and... While no missing lines, the print looks really bad. But it did print and finish it so I guess that's a win.

    I've been trying to find ways to calibrate it and having some issues. Esteps are good and flow seems okay too. Attempting some different slicer settings but I worry there's something wrong in the hotend.

    I'm annoyed cos I had it printing really nicely and...now I'm back to square one. Help!
     
  12. mark tomlinson

    mark tomlinson ༼ つ ◕_ ◕ ༽つ
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    Belts and stepper drive cogs are tight?

    A picture of the 'crap' benchie would help :)

    and to be clear you have not gone and altered the firmware since it was printing well?
     
  13. feralsteph

    feralsteph Member

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    https://imgur.com/a/DL0sslW

    Took some photos

    So after printing the fox I changed since settings to try a benchy and will it isn't great.

    Only firmware change was the temp sensor and max temp range change. Otherwise nothing changed.

    I think I need a bit more part cooling on one side as I only have one fan. I tried to fix the banding by adjusting the z screws but it's either not done right or there's something else wrong.
     
  14. mark tomlinson

    mark tomlinson ༼ つ ◕_ ◕ ༽つ
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    The layer lines on the benchy could be either a loose belt that allows the head to 'slop' beyond where it should stop OR over extrusion.

    It could also be an issue with the drive on whichever axis that is (X/Y). Some of the early R1 units had Z banding (feel free to search the forum for those threads) su to poor choices for the threading on the Z threaded rods by Robo.

    I'd check the belts and calibrate the extruder first.
     

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