[BUG] Bulging approximately from the 6th layer #543

New Issue

2024-07-11T17:13:21-05:00

madcowkp commented

2024-07-11 17:13:21 -05:00

(Migrated from github.com)

Bulging approximately from the 6th layer

Steps to Reproduce

I made some upgrades to my Anycubic I3 Mega Pro:

Self-printed Anycubic i3 Mega X-Carriage [MK4]
Installed BL Touch
Changed all drivers to TMC2208
Followed all instructions exactly

I tested the TMCs in the following configurations, but the result remained the same:

X	Y	Z	E0	E1
1V	1.2	1V	1V	1V
1.15V	1.3V	1.15V	1.15V	1.15V
1.13V	1.22V	1.15V	0.94V	1.15V

Expected behavior: Solid print results

Actual behavior: The auto-leveling works excellently, and the first layer is perfect. After about the sixth layer, a kind of bulge forms, running around the entire print object.

Additional Information

When I updated the printer, I completely disassembled it, cleaned it, re-oiled and greased it, and reassembled it. It seems to me that the Z-axis is not lifting cleanly, but this is just a suspicion. Does anyone have an idea where the problem might be? I am attaching some pictures of the poor print results.

### Bulging approximately from the 6th layer  ### Steps to Reproduce I made some upgrades to my Anycubic I3 Mega Pro: 1. Self-printed [Anycubic i3 Mega X-Carriage [MK4]](https://www.thingiverse.com/thing:3537449) 2. Installed BL Touch 3. Changed all drivers to TMC2208 4. Followed all instructions exactly I tested the TMCs in the following configurations, but the result remained the same: |X|Y|Z|E0|E1| |---|---|---|---|---| |1V|1.2|1V|1V|1V| |1.15V|1.3V|1.15V|1.15V|1.15V| |1.13V|1.22V|1.15V|0.94V|1.15V| **Expected behavior:** Solid print results **Actual behavior:** The auto-leveling works excellently, and the first layer is perfect. After about the sixth layer, a kind of bulge forms, running around the entire print object. #### Additional Information When I updated the printer, I completely disassembled it, cleaned it, re-oiled and greased it, and reassembled it. It seems to me that the Z-axis is not lifting cleanly, but this is just a suspicion. Does anyone have an idea where the problem might be? I am attaching some pictures of the poor print results. ![Pic1](https://github.com/user-attachments/assets/d2d91bb9-618f-44dc-9439-565d2c951b29) ![Pic2](https://github.com/user-attachments/assets/a78ff246-3372-4e0e-a18d-f6eeabbbae6f) ![Pic3](https://github.com/user-attachments/assets/3bfbe29f-509b-480a-adc5-98e44d2fc1e5)

St-Aris commented

2024-07-23 03:00:09 -05:00

(Migrated from github.com)

Have you tried 'load fw defaults' and 'save eeprom' from the special menu?

davidbatoha commented

2025-02-13 09:53:18 -06:00

(Migrated from github.com)

I get similar results on my prints. The first layer is perfect and after the first 2 or so layers it seems like an over extrusion. the rest of the print except the last layer is also good. Any ideas what is wrong?

I get similar results on my prints. The first layer is perfect and after the first 2 or so layers it seems like an over extrusion. the rest of the print except the last layer is also good. Any ideas what is wrong? ![Image](https://github.com/user-attachments/assets/d5bc4598-c36f-49a9-93e8-10cf5a679b35) ![Image](https://github.com/user-attachments/assets/301cb8aa-2d8b-4228-bfb8-d6d5c9d08eb7)

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Reference: wp/Marlin-2-0-x-Anycubic-i3-MEGA-S#543