border agglomeration issue

Hello,

I get issue when printing borders, on the picture I have vertical layer after layer not gluing for the whole vertical border surounding print.
I do not get any issue with filling print part and it's correctly melted at the base and also at the start area of a layer
see the pic to understand.

I print on : ender 3v2
2mm thick border
normal speed
element modeled in fusion360 exported in 3fm to cura.
temp 207 / 67 I also tried 209/67 without change


any idea ?

I see two problems- under extrusion that is keeping perimeter and fill lines from sticking together, and the uneven spacing of the fill lines- they are in pairs - indicating some backlash or other mechanical problem.

The lines should all fuse together, and spacing between fill lines should be even, not paired. I would try to fix the uneven spacing problem first, then the extrusion problem. If you fix the extrusion problem first it may hide the other problem.

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Ultra MegaMax Dominator 3D printer: [drmrehorst.blogspot.com]

Hello,

thank for answer,

Sorry UK/US is not easy, maybe I didn't understand correctly.
you asked me :
"I would try to fix the uneven spacing problem first"
ok, but how to proceed ? what to change and where ?

I saw this parameters :

wall thickness : I modify it to 2mm instead of 1.2 default

wall line court change with above parameter 5

Outer wall wipe Distance 0

Outer wall insert 0 (I was thinking to put more for this parameter)




just for info :
I do not have this issue with other PLA. this one request higher temp to work 207/67 instead of 198-200/60
issue is only on vertical wall.
1st layer touching infill part is better melted to the infill part

Oki, what I tried that seem to resolve a little the issue :


wall ordering : outside to inside
outer wall wipe distance 1.2 instead of 0
outer wall inset 1.2 instead of 0
wall flow 120 instead of 100
I reduce fan speed to 50

now on the 5 wall. 4 are correctly melted to the inside structure
the last external wall remain unmelted.

hope this will help someone to identify issue and solve it