So wtf is up with Cura and thin wall calibration cubes?
When I try to run the gcode (which looks messed up) generated with cura. my printer does nothing and then the z-axis runs up.
The calibration cube I’m trying to print is the thin wall from here http://www.thingiverse.com/thing:2064/#files
http://pastebin.com/0VjFDNVF
You slice a solid cube, and set your infill to 0, and perimeters to 1x your nozzle width. The walls of that are too thin for your nozzle to accurately lay down, so cura skips it. Don’t try to slice that thin walled thing.
So how does one calibrate wall thickness?
Do what @ThantiK describes, then measure the wall thickness on the object with calipers and compare against the expected value. That way, the software believes it’s laying down a perimeter that’s the set width, but reality may differ from that and that possible difference is what you need to calibrate for.
Yeah, Cura fails badly on thin walls. It’s a flaw in the algorithm that ascribes a zero value where the stl is thinner than the voxel edge.
So should I be using slic3r instead?
No, you just shouldn’t be slicing that calibration object, you should be slicing a solid cube and setting it for 1 perimeter. You wouldn’t slice that calibration object with slic3r or KISSlicer either.
Ok ill give that a go. Weird some one would make that object then.
Slicers still have no idea how to handle thin walls? Maybe it’s time I start hacking on slicers again.
@Mike_Ashcraft , look how old that object is… it’s from 2010. People were using Skeinforge back then. Sometimes not even that…
Gotcha so is there a good tutorial for calibration that’s up to date?
Thanks I’ll check it