Cracks always at the same spot // 16 hour print
Hello,
iam out of ideas.
I printed this
4-5x PLA -> no Problem
2x Petg (Sunlu) -> no Problem
3x Petg (Sunlu) -> crack
1x Petg (Bavaria) -> crack
1x ASA (Bavaria) -> latest from pics -> crack.
ASA was printes with 260/110°c in an enclosure with 42°c constant inside.
what could i do?
Please save your project as a .3mf file
Files > Save Project as
Zip the .3mf and post it here. It will contain both your part and your settings for us to diagnose.
Cheerio,
RE: Cracks always at the same spot // 16 hour print
i cant do that public. i will send you a pm.
I'm not the only one here who can diagnose a .3mf and for most cases I am not the best.
Here's what I would look for:
Stupid settings like ultradetail layers and 100% infill, unsuitable infill patterns - cubic would be my first choice here, walls too thin to take warping stresses - thicken the walls enough to accept additional perimeters, and other non standard temperature and speed settings to no purpose.
Also shapes that naturally induce uneven stresses, a few slots or offsets to break up very long filament runs can make a huge difference to warping.
In your case I suspect there is too much mass in the right hand side as you are printing it...
Is this a replacement for an injection moulded part? If you are designing from scratch chamfering away some of those curves might reduce the stress propagation.
Cheerio,
RE:
I tried 0.3 with 0.4 nozzle at 15-20% infill + 0.4 layer with 0.6 nozzle.
Gyroid pattern. Reduced speed in the last fail also. limited max volumetric speed to 4mm³ also
2 perimeters now. since a 3 perimeter model cracked also.
changed the nozzle to a nickel plated copper one too with higher temps (265/115)
ill try right now another PETG Filament. A buddy had success with stock (petg)Prusament/Settings
