Hi everyone! Can someone explain why this is happening? It is supposed to be a straight wall, but at the bottom where it’s printed for about 10mm with 20% infill it’s warping inwards and the material is getting matte. The hollow part on top of this section (about 2mm wall thickness) is no problem.
speed and temp? material?
Heated bed maybe too hot?
We’ll need some more details @Simon_Grimm , what material is this and what are your temperature/cooling settings. I’m wondering if this is a fan issue - the upper layers with the 2mm thickness will be cooling very differently from the lower infilled layers.
I’m going with @Richard_Gain on this one. Heated bed temps causing material to stay within glass transition temperature and cooling slower than top layers.
Heat and pressure stuff
Ok, so it’s printed in PLA with a bed temperature of 65°C and nozzle temp of 210°C. The printing speed is 60mm/s. The extruder is a E3D with a 0.4mm nozzle.
I’ve recently discovered that I get good results with PLA by setting the bed to 65C for the first layer, then turning down to 55C for the 2nd and subsequent layers.
Ok, thanks for the advice, but unfortunately I can’t set the temp for seperate layers in Cura.
You still have a couple of options.
- Use your printer controller to turn down the bed temperature after the first layer.
- Edit the gcode file in a text editor. You should find ‘M140 S65’ near the start of the file, which sets the heated bed temp. Search for the start of layer 2 (using find “G1 Z” might help). Insert a new line just before it saying ‘M140 S55’.
Ok thanks, I will have a look at it!