Could this be due to poor filament quality? Using Hatchbox White 1.75mm PLA with a 0.4mm nozzle on a delta printer.
Edit: Interestingly enough, almost the same thing happened for a another print, and it’s on the same side. Tighten belts?
Looks like this side is indented, is the opposite side bulging or indented as well?
Indented. It’s supposed to be the top section of the Falcon 9’s legs
Since it’s not bulging on the opposite side it’s not the belt tension, it’s most likely the filament. I’ve personally never had an issue like this with Hatchbox filament but I think another user here had a similar issue with their white PLA recently. Try another print and see what happens. If you can sit by the printer while it prints, watch for this to happen again and if it does measure the diameter of the filament going into the printer. It will likely be less than 1.7 mm.
So the entire set of layers is slightly smaller?
@Robert_Rapplean Yeah there’s two layers for the perimeter. From looking closely, it seems the printer printed the inner layer right, but not the outer layer.
@Adam_Steinmark Could a small draft cause this? The power supply has a fan that expels air out and I didn’t bother to block the air flowing to the bed. It just so happens to be on the same side the weird lines
For PLA? No chance. You could print in a freezer and you wouldn’t get that much shrinkage.
@Adam_Steinmark For some reason the lines are back at almost the same place as before. I’ve slowed down the printer now but dunno how it will turn out…Can’t measure diameter now because I don’t have a caliper with me now
Can you post a pic of the new one?
@Adam_Steinmark https://imgur.com/a/auTTU For this print, I rotated the object 180 so it isn’t printing the same wall from yesterday. The weird lines appeared at the same exact position though
@Cal_Aim Okay so we’ve narrowed the issue down to either gcode or Z axis. What machine are you using?
K280 HE3D …It’s looking much better now that I have slowed it down to about 65% of its original value. I want to think its because it’s moving too fast but that wouldn’t explain why the first 200 layers are almost perfect.
I’ve always hated dealing with Z Axis problems
Hmm I don’t have much experience with Deltas. How tall is the print?
@Adam_Steinmark About 9.5cm
@Cal_Aim Can you print this file at full speed? If there’s Z issues it should show up at the same height on this model.
https://www.thingiverse.com/download:4543913
@Adam_Steinmark Weird ! it looks perfect even though I ran it at 100%…Maybe its the CAD model?
@Cal_Aim Well you do have a delta so it may be the angle of the arm that’s an issue. If you link me the model I can take a look at that though just to rule it out.
Next print test is gonna be a cylinder at roughly similar diameter as the original print. If you don’t want to model one you can use the link below and scale it. Make sure it’s at least 100 mm tall.
@Adam_Steinmark https://www.3dprintersbay.com/he3d-k280-large-delta-3d-printer-kit?gclid=Cj0KCQiA2snUBRDfARIsAIGfpqEHEgsNqteJ7Dp8Ou8ArDyIkdAi2oLO4IYKe-tLU7dpGneMS1JomL8aAsIeEALw_wcB
I’ll print that tomorrow. Too late for me to print that tonight.
Yeah I was looking at pics of it. It uses long thin arms which may be bending slightly at steep angles and causing this.