Comment on Suggestions on print settings

NaibofTabr@infosec.pub ⁨1⁩ ⁨year⁩ ago

• FuglyDuck@lemmy.world ⁨1⁩ ⁨year⁩ ago

  You could fix this by making the bars thicker, or by increasing the number of horizontal connections so that the unsupported vertical pieces aren’t as tall, or possibly by slowing down your print speed - but it’s really a design issue.

  another solution might be to angle the bars so they criss cross in a skinny-X pattern, but I agree it’s a design issue. especially if it’s always breaking at the same spot.

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• kale@lemmy.zip ⁨1⁩ ⁨year⁩ ago

  Second this. If it’s PLA, improving layer cooling might help stiffen the last layer before the next is applied. If it’s not PLA, slowing the print down can reduce the horizontal forces for slower-cooling filaments like PETG/ABS. If there’s any warping or over extrusion leaving little blobs on the surface, your nozzle can bump into them, breaking cantilevered features like this one, or breaking the part off the build plate. Getting retraction to blob less or making sure no over-extrusion exists could help. If it’s PETG or Nylon, printing slightly wet (where the surface doesn’t look bad) can cause blobs on the top layer that the nozzle hits and causes those horizonal forces.

  Prints like this aren’t impossible. I’ve printed a PETG storm drain that had vertical slots like this when I couldn’t buy one I needed. It turned out great but I had to print really slow.

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• rustyriffs@lemmy.world ⁨1⁩ ⁨year⁩ ago

  Thank you for the help with the photos. I’m still struggling with it for some reason…

  I appreciate the feedback on the vertical bars being too thin, that makes sense. I’ll do some adjustments to the design, do some calibration prints, and give it another shot.

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  • NaibofTabr@infosec.pub ⁨1⁩ ⁨year⁩ ago

    For the images, try right-clicking on one and clicking “Open image in new tab” so you can see just the image without anything else. Use that link.

    For designing, keep in mind that at the tip of the nozzle where the soft plastic is hardening on the model, the nozzle movement is pulling on the hardening plastic and actually putting a lot of force on that part of the model… there’s nothing you can really do to change that, it’s just how printing works. You kind of have to design around it.

    From what I can see in the images, your calibration looks fine. The layers are actually aligned really well, I wouldn’t change anything there.

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