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Filament not sticking.
I opened a new Prusa filament (Lipstick Red). Printed fine Sunday. Monday it was not sticking to the plate in some spots. I put it in a dryer at 50 Deg C for 5 hr. Same me problem . The plate is cleaned each time with 99% IPA and is spotless. Printing at 215 (That's what the spool says) with a 60 degree bed temp. Wednesday It made the mess shown in the picture. 1. The little test strip in the front was 0.45mm thick. Is that right? 2. What should the purge string diameter be? 3. They say do not use a Z offset because the Core one measures where the plate. It appears the nozzle is not getting close enough to the plate
Posted : 17/12/2025 9:33 pm
RE:
IPA doesn't really clean the plate, it just moves oils around. Try dish detergent like Dawn and warm water.
- Yes, for a 0.4mm nozzle it should be 0.45mm thick. This is set in the slicer under "Default extrusion width"
- Same width extrusion width as in #1
- Correct, the Core One uses the load cell and creates a mesh of the plate surface. Probably the nozzle is not getting close enough because filament was stuck to the tip of the nozzle when it was probing the bed. Try cleaning with a brass wire brush.
Posted : 18/12/2025 12:18 am