Anyone have any suggestions on preventing the corner walls (all four) from this print from bowing inwards? It seems to bow inwards near the middle and then fix itself at the last top layer.
PLA printed at 220/75. I am going to try 220/65 afterwards. I’ve tried maxing out the minimum part cooling fan. Outer walls is set to 50mm/s with two wall loops.
This was printed on a P1PS with no chamber fan enabled (no screws/foam yet) and lid off to prevent heat creep.
Is this just a cooling issue of some sort that I’m unaware of?
On this second similar model, there is no issues with the corners although this one is rounded and only partially walled.
Bed is way too hot. 60c max on PLA generally.
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Yeah, the manufacturer rates it up to 75 degrees since it’s more heat-resistant than standard so it didn’t occur to me that it could be the bed temp (it’s the last thing I’m checking).
I was having issues with prints warping upwards, so I always thought it was a bed adhesion problem so I was upping the temperature (even up to 85 degrees at one point).
I printed something else just now at 65 degrees and that came out pretty perfect.
65c in some cases is ok on PLA, but 70+ is just too hot for pla. I have HT pla that is annealed at 100C. Thing is, though, the first time it’s melting you have a crystallization process going on. Also why annealing later ups the temp even more. Anyway, hope that fixes your problem, Please let me know if that corrects your problem.
I’ve used the PLA Pro from eSun, Voxelabs, and Creality’s Hyper. All have worked great with the bed temperature between 52 and 55. BL filaments adhere great at those temps also.
I did a wet palette that has walls on the bottom about the same thickness and height with no issues. But I also ran the hot end at about 210 degrees and used standard speed.
Might want to try both a flow calibration AND a temperature tower.
Take a look at the speed settings for the sliced model. It looks like different speeds on the edges could be the reason. Have you made a K-value calibration for this filament? The K-value (Pressure Advanced) calibration is for getting better results if printing speeds changes (slow down, speeds up).
