rs50pilot wrote:never did a calibration like that
Welcome to the inner circle of dweebdom ...
The Extrusion Multiplier is basically a Fudge Factor compensating for a myriad non-linear effects, so it will change whenever anything
in the extruder changes: new filament, new temperature, new speed, whatever.
Always always always print-and-measure a thinwall box to verify the Extrusion Multiplier before tweaking any other settings.
While you're at it, print a few of them to verify platform alignment:
https://softsolder.com/2015/09/04/thinw ... er-images/
IMO, the fundamental problem with DIY 3D printing boils down to it being a manufacturing process marketed as a consumer-friendly pushbutton activity. In reality, you must measure
the results and adjust
the slicer settings accordingly, at least to produce close-tolerance parts.
Paging Jason / jk42 ...
Given that most folks (seem to) blow past the whole Extrusion Calibration thing in the rush to print stuff, can you make it a bit more prominent in the things-to-do list? Perhaps in a filament changing checklist where EM calibration would fit right after measuring-and-setting the actual diameter. It'd scare off non-techie users, but calibration doesn't matter when you're just printing bunnies.