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Self leveling passes but nozzle prints too high


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Posted · Self leveling passes but nozzle prints too high

Hi,

 

I am brand new to 3D printing so this may be a simple fix but  I haven't figured it out yet. Basically, when I go to print my design it passed the self leveling process where it touches the nozzle to the glass in all corners of the hot bed; I'm assuming it's calibrating itself so it knows exactly where the hotbed is. When it starts to actually print, it starts in the back right corner. Everything is fine and it builds up between 0.5-1 cm. It moves toward the front and instead of printing on the glass, it is about 0.5-1 cm above the glass. it's needless to say, that doesn't work. I've attached an image of what it should look like and the mess that I actually get. Any help with this is greatly appreciated. I'm using ABS and breakaway.

Image_20200513_094637.thumb.jpeg.d06dd03f778623c169ed04a91af8956f.jpeg2020-05-13.thumb.png.531b1731a6161286967906c906a955d1.png

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    Guest maht
    Posted · Self leveling passes but nozzle prints too high

    I don't have an S3 in front of me right now, but can you look for an option on the display along the lines of: SYSTEM > Maintenance > Diagnostics > Bed level sensor

    This will test the performance of the capacitive sensor in the print head to see if it's defective.

     

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    Posted · Self leveling passes but nozzle prints too high

    Ok thanks, I can try this later when I go back to my printer. It seems like the menus are similar between the S3 and S5 but I should've mentioned this is the S5. 

     

    I should add that when I first tried my print, I get a message that it could not complete active leveling. I did a self calibration by adjusting the 3 knobs and using a sheet of paper to feel for when I felt enough friction to slightly grab the paper (it still moved relatively freely). I tried my print again and it went through the active leveling where it touches the glass with no problem. 

     

    Are there any other suggestions? I don't know anything about 3D printers but I have a feeling this will not be the issue since it passes the active leveling test. I will definitely try though.

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    Posted · Self leveling passes but nozzle prints too high

    Yes, I know that it could throw off active leveling. That's exactly what happened until I fixed it doing a manual calibration. After the manual calibration, active leveling works. The link you just posted is exactly what I did, and it then started passing the active leveling. That is exactly why I'm confused and posting about this. If it passes active leveling before the print job, it MUST know where the build plate is. That's the whole point in active leveling, right? So I'm not understanding how/why during the print process it would go back to the area where it touched the glass to calibrate itself and but start printing about 1 cm above the glass (even thought it knows exactly where the glass is).

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    Guest maht
    Posted · Self leveling passes but nozzle prints too high

    Has it done this for all objects you've tried to print? Maybe you can try printing a small test object to see if the behaviour is the same.

     

    Just a hunch but maybe there's a Z offset in the wrong place. If you're able, you could share a Cura project file with me to analyze. If that's a route you'd like to take, open your file in Cura, click  File -> Save..., and attach the .3mf file here so I can take a look with the same settings as you.

     

    And if all else fails, contact your reseller, they should be able to help you through this.

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    Posted · Self leveling passes but nozzle prints too high

    I haven't tried a small object alone but that may be something to try. Just try placing a small block in the 4 corners. The back right corner seems to be fine thought because it did start to print as it should. I've attached my file here. Thanks for the help with that.

    UMS5_ComponentHolder_s1.3mf

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    Guest maht
    Posted · Self leveling passes but nozzle prints too high

    The geometry of your model touches the bed in some places and not others, so that explains it.

     

    image.thumb.png.3fc76d3d7b1f9793d008b64e68f08f15.png

     

    I've attached a 3mf that reorients your model and enables support for it to print reliably.

    UMS5_ComponentHolder_s1.3mf

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