3 good layers then no succesful print
Hello,
I have a new VCore 4 Idex and followed the Comissioning Guide, but I can not get a finished print. The first 3 Layers print beautiful. When the Infill pattern starts the Walls curl up and the infill is not printinting right. I tried changing to different filament, flow, checked if the rotation distance of the extruder was of, printed only with 30mm per second, fan speed from 0 to 100%, changed the Infill type and speed. I tried everything I can think of.
I started with the standard prusa slicer Profile without any success and changed values but it did not get better. The first 3 layers are perfect and print smooth. After those 3 layers the walls curl up, get this weird pattern and the infill is not printing properly.
12 Replies
I am having the same issue apart from I can print a voron cube fine just nothing else. I have tried having my fans at 50%
Hey Kiwi death - you per chance another Kiwi?
@VaultDweller I am but I don't live there anymore
pictures are a bit blurry but I think you're overextruding. That infill looks BIZARRE
Having same issue, it looks like under extrusion, but I am not sure.
Printing too fast for a vCore4 IDEX here is a setting i use that helps, spent hours running speeds and acceleration to get consistent prints
i have been doing a ton of work and testing to determine an optimal tension to speed optimization settings
tools used:
- BIQU Belter /w printed tip
Machine:
- RatRig vCore4 400mm IDEX
Findings:
- 10k acceleration and 600mm/s is where the issue seems to arise where the toolheads will move at high speeds off their X0/X1 homes when rapidly moving the Y axis
Solution findings:
- Using the BIQU Belter adjusting all belts while in the 0 position to -6.5 to -7.1 ensuring they all match
- by reducing the max accel to 8k and max speeds to 500mm/s the X0/X1 jerking motions seem to have been eliminated though more testing is required
While i dont have a Hz measurement tool these settings seem to have helped in the machines consistent movements
"fan speed from 0 to 100%" as in you've tried no cooling or thats the min/max? My initial thought is overcooling for the set temp. The fan at 100% is cooling the tip enough to cause under extrusion. UHF is great but it also adds a considerable distance from the tip to the heating element. The silicone sock can only do so much.
Sorry for the late answer from my side. It is extruding nicely now. The problem was the standard nozzle. I never crashed into the bed or similar. I baught a new one and it extrudes perfectly fine now.
However I have bad layershifts after some layers. I am trying to get the belts right but it is not working for me. I looked if they are not the same length and tried to tention them several times. But alwais those layer shifts. I think my frame is slightly twisted but when I align the gantry in the back so there is no play, I have play in the front. I have a belt tention graph that as far as I can tell is ok. Maby somebody can help me
Now i did a new belt tention mesurement and did not change anything at all... Different graph for y....
I got news! First successful benchy is printed. The original belts had some give to them. I cant explayn why. I put new ones in and now it is working!
I hated the original steel nozzles. Since the heater is quite far from the nozzle it seemed like even moderate cooling would cause issues with them.