Im not sure what to try at this point. Running default settings for .12 layer height as well as the default polylite profile and I cant seem to get any decent overhangs to print even a 45 degree angle is coming out pretty bad. Using polylite pla pro filament. the following is everything i have tried:
slow printing down ( set everything to 60 speed with lower temp)
lower temp to 190 ( kept speed)
up temp to 230
up aux fan from 70 to 100
turn off aux
play with part fan speed from 0-100 in 20% increments
play with " slow down for overhangs" speeds
With all of these settings nothing has helped. On my budget printer im able to get up to 65 degrees on overhangs to come out reasonably well so its wild to think this printer is worse than a 300 one. any tips would be appreciated.
Overhangs are kryponite for bambu printers. My plan is a 2nd aux fan. Someone created an stl that puts it at the same height as the 1st aux fan. Hopefully someone comes up with a good hotend fan shroud. At these speeds, dual 5015 fans were a must.
It’s funny, I actually just swapped to the new fan shroud thats been circulating AliExpress like 30 min ago and it has made absolutely no difference. Its funny I’m dealing with this issue and the shroud happens to arrive just now lol unfortunately it did not solve this overhang problem. This shroud was my last hope for better overhangs. I’m not sure what else to try at this point. My next try was going to be speeding up the overhangs rather than slowing it down. The nozzle heat may be causing the previous layers to heat up than the fan is causing it to contract causing the curling so faster printing may actually solve it. Huge long shot though. Once I get back home I’ll upload an image of the results.
It’s a drop in replacement using the current fan. After doing some research online it appears that they have the spouts pointed a bit lower than they should be so it’s not really hitting the nozzle effectively. That’s probably why it didn’t make any difference. Will have to wait to see if something else comes up that’s a different design from this one.
So I am pretty confused but increasing overhang speed to 100mms instead of the default 50-60 allowed me to get passable overhangs up to 60 degrees which is better than what I was getting before. Attached are the before and after
Some here - not able to print any overhang - parts are crashing - print done.
its a mess - if the support wouldnt get into a spagetti party in 6of10 - there would be an option.
actualy there is one to say : buy and burn ´cash
I was getting bad overhangs on the Orca Slicer temperature tower.
I solved it by changing wall generator from arachne to classic, and setting overhang speeds to 50mm/s for all four overhang speed settings. I also changed the outer wall speed to match the overhang (although this might not be needed, I’m not quite sure).
I haven’t printed an overhang tower to see how good it is on steeper overhangs yet, but figured this might help you.
