vertical Zits appearing on my small scale prints

[jsigala 0]

Hi Everyone,

 

I'm fairly new to 3D printing and I wanted to see if I can get some help with my prints! I've been trying to print out some cookie cutters with PLA and I get keep getting these blobs/zits up and down my print. I've tried changing the temperature and the retraction settings and this is the best I can get my print with my cura settings below. Does anyone have any suggestions?

 

Cura 4.8 Settings

layer height - 0.4mm

hot end temp - 190

print speed - 30

travel speed - 30

retraction dist - 3mm

retraction speed - 50mm/s

 

 

 

 

[jsigala 0]

Sorry I had a typo

 .2mm layer height

.4mm nozzle

 

Also, the walls for cutters are .4mm thick

Quote

 

 

[geert_2 558]

I am not sure what the zits are, but it could be seam lines where the nozzle begins/ends a loop, and switches to the next?

 

I never played with retraction settings, so I can't comment on that. But usually, printing slow, cool and in *very thin layers* improves quality. The "slow and cool" you already seem to have, but try 0.06mm layer height?