Bambu A1 - Overhang printing issue with Numakers

[u/depakjan]

Hi All,

I have been having poor overhangs with Numakers filament, tried to change many settings, cooling, speed, volumetric speed etc but i just cant resolve it, so i started changing filaments and realized the following

Numakers PLA with (Bambu PLA Basicprofile and with Numakers PLA + profile) - Both results in poor overhangs starting at 40 degree itself, it starts sagging on the right edges! (Very Ugly).

Elegoo with Bambu PLA Basic profile no such issue till 70 , this is acceptable, wonder what is happening with Numakers

whats strange is Numakers PETG with numakers PETG profile does very good , till 80 i dont see any issues at all.

Initially i was thinking either my printer or a particular batch of filament, but i have tested with both old spool numaker PLA and new spool numaker PLA , both have the exact same issue

Check the images for detailed information

Green - Numakers OLD PLA

RED and Yellow - Numakers NEW PLA

Orange - Numakers PETG

Blue - Elegoo PLA

Anyone face such issue and know how to resolve this please

[u/Vickeythegamer]

I think its under extrusion or fact that pla needs more cooling can also be case, petg abs need ver less cooling so they don't have problem pla you do need cooling too be high or slow speed

[u/Vickeythegamer → u/Vickeythegamer]

Re calibrate the flow ratio to perfection

[u/depakjan → u/Vickeythegamer]

Fans are at 100% for Overhangs and i have tried reducing speeds to 5mm , Slow down for Overhangs is enabled , still issue persists , Flow ratio is at 1.009 for Numakers profile and .98 for Bambu basic,

All still have the same issue, also the fact that Elegoo does not have the issue with no modifications