Is calibration of Linear/Pressure Advance still a thing for the Core One and is the calibration model/website applicable for the Core One?
Is calibration of Linear/Pressure Advance based on Prusa's article still a thing for the Core One and is Gareth's calibration model/website applicable for the Core One?
I own a Prusa Core One and calibrated ...
- ... the temperature for my Filament based on a customized version of Kryštof's temp tower
- ... the skewness by using the Matthew's Vernier Test
- ... the extrusion multiplier based on Prusa's Precision Cube
However, I still see small gaps of missing filament near sharp corners in my printed models. This is especially true for walls which only consists of a number of perimeters. Then I found Prusa's article about Linear/Pressure Advance calibration and the flaws in my printed models look exactly like the problem within the red circled area in the picture in that article. The article says
If sharp corners have blobs, increase the K value. If you see missing filament, decrease the K value.
At first I thought I had a problem with under extrusion, but the Precision Cube is fine and I don't see any problems with large, flat surfaces, i.e. solid top or bottom infill. I only miss small amount of filament in the corners.
But the article is some years old and only refers to MK printer models. So has anybody experiences with Pressure Advance Calibration on the Core One?
In case someone wonders. I use Buddy3D PETG brown, a ObXidian HF 0.6mm nozzle, 0.32mm layer height and the structural printing profile.
RE:
I ran that model on my Core One once and found the factory default value is spot-on. Also, that the test pattern tests user skills in print bed cleaning 🙂 the thin lines can be seriously sticky.
But, just a spot-check, didn't try all nozzles and materials.
If I want pretty results, I lower speed if only for VFAs < 50 mm/s.
RE: Is calibration of Linear/Pressure Advance still a thing for the Core One and is the calibration model/website applicable for the Core One?
When you do the EM calibration cube test you need to ensure that the walls are generated with the classic wall generator and that variable layer height is turned off. Also, I use Califlower Mk2 to measure both XY shrinkage and skew
RE: Is calibration of Linear/Pressure Advance still a thing for the Core One and is the calibration model/website applicable for the Core One?
When you do the EM calibration cube test you need to ensure that the walls are generated with the classic wall generator and that variable layer height is turned off.
Thanks didn't know that. I probably overlooked that information in the instructions. I assume you mean the following settings
- Print Settings > Layers and Perimeters > Extended > Perimeter generator: Classic (default: Arachne)
- Printer > General > Extended > Activate variable layer height: false (default: true)