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[Solved] Anyone got ideas on how to fix this bulging issue with thin prints? (sopuli.xyz)
submitted 2 months ago by to c/3dprinting@lemmy.world
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Hello netizens of Lemmy, while printing this single wall wing segment i ran into a problem with significant bulging around the middle. This causes the segments to not fit onto the frame or each other. If anyone has ideas on how to fix this, please share. At this point i'm pretty desperate and willing to try just about anything.

Update

In the end it was a combination of slowing down the print, lowering nozzle temperature, and adding perpendicular supports to the flat parts.

Solution (for PLA): Nozzle temp 190C, bed temp 55C, print speed 30mm/s, keep the fans spinning, double walls so that the supports can be printed with the body in one stroke as otherwise they won't attach.

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[–] 10 points 2 months ago (2 children)

It looks like the effects of heat warping if it's all confined to the middle. First step is to allow the bed to heat up longer imo. The center might holding heat better or worse than the rest and needs longer to equalize. Is your printer enclosed? If so that should solve it. If it's not then you may have excessive airflow across the bed.

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  • [–] [S] 5 points 2 months ago (1 child)

    Thanks for the reply. The bed already gets way more time than it needs to heat up so that part is fine. Printing it a lot slower will probably help equalize temperature tho. I'll try that and we'll see if it works.

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  • [–] 1 point 2 months ago* (last edited 2 months ago)

    You also could also attempt different patterns if you feel it's the tip causing localized heating. On a flat print spiral is going to make the center hotter than the outside. Diagonal sweeps are going to do the opposite. If it's on the side then sweeps w/ length for cold, against for hot.

    Edit: since you're using a .2 nozzle I would hazard a guess that you're experiencing cold issues rather than excessive heat. Slowing down would make a big difference or switching to a more complicated pattern that spends more time in each area. Seems like you've got the right approach

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