1st Layer - Filament-flow
I started a print, just a plate with 1mm and got this result. It starts quite good in the right corner and becomes worse and worse as it goes on. Parallel the extruder is clicking.
Has anyone please an idea or a suggestion, what to do or to change?
6 Replies
I think I found the solution: I reduced the flow to 97%, the clicking stopped too.
I will observe it ...
How long heat soak do you do between heating the bed and starting the print? The bed will rise quite a bit while it's heating.
so - how long do you recommend to "prepare" th print (with PETG)?
I actually don't know for sure.
I remember seeing Helge Keck mention this for printer.cfg
[gcode_macro RatOS]
variable_bed_heat_soak_time: 1200
variable_hotend_heat_soak_time: 240
Those are in seconds so there would be 20 minute wait for the bed to heat soak at the beginning of every print. I do the heating manually before printing (or add the temperature back between prints) as I don't want to wait 20 minutes before a 5 minute print.
This does make sense since we're heating a pretty big chunk of aluminium.
I've heard some go as far as heat soak an enclosed printer for an hour before a print since linear rail and aluminium extrusion will expand differently and that can cause issues during the print as well..
The ripple pattern usually means the nozzle is too close to the bed.
The clicking extruder is probably also because it cant push enough filament out of the nozzle due to the back pressure, also caused by the nozzle being too close to the bed.
Check out my thread. Had the same issues. https://discord.com/channels/582187371529764864/1360247935496884265