Problems with brims around supports

[bson]

I can't seem to get brims to stick to supports, for some reason brims are underextruded. But only brims and occasionally the first layers of support towers.




This makes them very prone to get knocked over:



This is a CR-10S running MarlinFW 1.1.9 and 25 point mesh bed leveling. I've checked and double checked the bed leveling, the E speed, and the flow rate for wall thickness. This never happens to me with Cura (but cura loves to leave support spaghetti, which then gets stuck on the nozzle, deposited, hardens, and gets bumped). The S3D supports are nice and clean, just really fragile since I can get brims to stick to them.



I'm using the suggested 50% "underspeed" for the initial layer(s).

I'm using Hatchbox PLA in 1.75, using a stock 0.4mm nozzle. I've made sure the start script enables mesh leveling in case it has been disabled:

Code: Select all

G28 ; home all axes
M420 S1 ; Enable mesh leveling
G1 Z5 F3000 ; lift
G1 X5 Y10 F1500 ; move to prime
G1 Z0.2 F3000 ; get ready to prime
G92 E0 ; reset extrusion distance
G1 Y80 E10 F600 ; prime nozzle
G1 Y100 F5000 ; quick wipe

Maybe if it printed slower? But I can't find any speed adjustment for the brim...

I'm at a loss how to make S3D manage this

I've attached an export of the profile used since there are a gazillion settings.

[S3D-Jake]

Try using 1-2 support base layers. The brim will attach much more firmly to a base layer which is filled 100% rather than the support infill percentage specified.

[wirlybird]

Also looks like the nozzle is too far from the bed for the first layer.

[bson]

Well, the first layer of the brim is solid and so thin is almost translucent. It's only the second brim layer that's spaced out. And the first brim layer is not close enough to the support towers, even though it's solid.

It's set to 2 support base layers, and 5 dense support base layers with 90% infill:



It's also set to 40% support infill, but I see no infill.

[bson]

Actually the photos were from a try with 1 support base layer. The screenshot is current, which is from a later test, which produces an exactly identical result. But I still see no fill, the towers look overextruded, the brim underextruded, and isn't properly attached to the supports. The supports don't get base layers properly, and it doesn't retract before moving away from a support.

[bson]

Thanks guys, but I've requested a refund. After tens days of experimentation I've decided not to keep the license.