Wall Thickness Slicing issue

[julsjunior 0]

Hello,

I have been printing off and on since I bought my UM. I have recently (about 3 days ago) updated to CURA 12.11. I had been using a much older version and was having issues with the wall thickness. If I put .8mm wall thickness (2 laps with a .4mm nozzle size) everything would print fine. If I enter 1.2mm, it over extrudes constantly on the entire print. Even when you hit print the stats shows that it is going to use considerably more material. So I updated to 12.11 and the problem is still there. I could not find if this is something other people have had issue with or not. I sliced several models and all of them over extrude with the 1.2mm wall thickness. On print I am working on at the moment this is what the different wall thicknesses output. Now, the ONLY box I changed was the wall thicnkess between the 3 outputs:

.8mm WT-

5.84m 50.17g 2:51 Print time

1.2mm WT-

9.91m 85.08g 3:11 Print time

1.6mm WT-

7.65m 65.70g 3:40 Print time

The print time bumps up reasonable amounts each time, and .8 to 1.6 WT seems to be reasonable (I am going to try and print at 1.6mm WT right now). But 1.2mm WT is obviously way out of line.

Please let me know if this is something I am doing, or if this is an issue with the software that needs to be fixed.

Thanks!

Settings:

.2mm LH

.8 WT

E Steps 865

Fill 25%

B/T Thickness-1mm

2.90 Filament dia (prints well at .8mm WT, going to try this with 1.6mm WT)

PD- 1.00

Nozzle size- .4mm

[Daid 285]

I just tested, and there is a problem with 1.2mm, it's a rounding error, so entering 1.20001 should work around it. I've made a fix for the next release, which will be out soon.

[julsjunior 0]

I did a print at 1.6 WT and it seemed good. I will use 1.20001 if I want 3 laps around the inside and outside. Thanks!

[Daid 285]

Note, I just released 12.12 which fixes the issue