adhesion - FDM printer first layer infill swell upward - 3D Printing Stack Exchange

My Kossel Mini printer was working well. Recently I made some changes including replacing the nozzle and throat, adding a silicone heater cover. Now it has the problem of first layer adhesion. The

slic3r - First layer - not even infill - 3D Printing Stack Exchange

3D printing schematics for (A) fused deposition modeling, (B

Layer separation and splitting FDM

Bumpy first layer with PETG - 3D Printing Stack Exchange

I'm having issues with first layer adhesion😓 : r/FixMyPrint

3D Printing First Layer Problems: How to Make It Perfect

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Bed adhesion problems on large prints : r/Ender3S1

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3D Printing First Layer Problems - Ankermake US

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extrusion - First 3 mm prints poorly, then fine after that - 3D