Hi all, printed this planter in PETG-HF after drying it for 12 hours at 65c. Black on left nozzle AMS HT and grey on right nozzle AMS 2 Pro. 0.4mm nozzle size. 0.20mm layer. Default bambu filament profile.
What causes the little dots of black filament in the patterned grey area? My best guess is contamination occurring at prime tower. All the black dots are located on side of model facing the tower. Remainder of model is clean.
If it’s contamination - what prime tower settings need adjusted?
NOTE: this has occurred on multiple models and multiple filaments (PETG-HF and PLA Basic)
I’ve tried changing tower infill from 150% to 250% to avoid contamination. (250% was used in this example)
I normally print with z-hop disabled (especially with PETG) unless absolutely necessary. I also enable avoid crossing walls. If no z-hop is the cause, are there prime tower settings I can adjust to accommodate? Thanks
planter1.3mf (7.8 MB)
If you’re saying this is just contamination picked up while priming I don’t agree - this is a distinct blob of filament that is extruded in that location.
It almost looks like you’re using the black filament for your infill on the grey parts. What’s your slicer preview look like?
It would be helpful to post your 3mf file if you’re able. Thanks!
Good point. The dots of black filament look a little too ‘neat’ to be mere contamination. I added the 3mf to original post. Nothing sticks out in slicer preview besides many of the grey pattern seams being in similar location. I’d greatly appreciate another look. Thanks!
Plate 1 is using both a black and a grey. Black inner solid body, grey exterior body. Changing between filaments is likely the cause. What printer are you running?
Printer is H2C - I didn’t mention because I posted in H2C section 
. Using both nozzles.
Odd then if running 2 nozzles. Not really sure what would cause this. The patterns are to regular to be a fluke imo. I looked through the slice and it looks alight to inexperienced eyes. I’m wondering it is the seams due to the “regular” pattern I can see some similar locations in the slice, but it doesnt make sense why it would show like that.
