CPE / PETG terrible first layer & surface quality - Materials & profiles - UltiMaker Community of 3D Printing Experts

Hi I aborted yesterday a print with Ultimaker CPE because the first layer was really bad. I had a lot of crumbs on the top of the first layer. I searched the forum and found some others with the same problem, but without any useful solution. I have to say, it was the first time I printed CPE with

UltiMaker Breakaway Support Material - 2.85mm (0.75kg)

No luck with CPE - Materials & profiles - UltiMaker Community of 3D Printing Experts

CPE / PETG terrible first layer & surface quality - Materials & profiles - UltiMaker Community of 3D Printing Experts

Disappointing first prints with new S5, searching for a good profile for TPLA black - UltiMaker 3D printers - UltiMaker Community of 3D Printing Experts

First layer problem with PETG - Irregular results – Assembly and first prints troubleshooting – Prusa3D Forum

How generalisable are material extrusion additive manufacturing parameter optimisation studies? A systematic review - ScienceDirect

UltiMaker CPE Filament

Disappointing first prints with new S5, searching for a good profile for TPLA black - UltiMaker 3D printers - UltiMaker Community of 3D Printing Experts

Ultimaker CPE (0.75kg) – Print Your Mind 3D

Oozing, blobs, and strings on S5 / PETG - Improve your 3D prints - UltiMaker Community of 3D Printing Experts

How to improve your 3D prints with annealing - Original Prusa 3D Printers

Ultimaker CPE+ (0.75kg, no NFC) – Print Your Mind 3D

Disappointing first prints with new S5, searching for a good profile for TPLA black - UltiMaker 3D printers - UltiMaker Community of 3D Printing Experts

No luck with CPE - Materials & profiles - UltiMaker Community of 3D Printing Experts