Z dimension undersized
I noticed that on all of my prints that my Z dimensions are undersized. For example, something that is supposed to be 38mm is 37.25mm. I also did a double wall test, where the walls are 100mm and 50mm and a height of 10mm. The x/y comes out to 100.04mm and 100.14mm and 50.15mm and 50.35mm. However my Z comes out to 9.7-9.75mm. Any idea what I should tweak?
4 Replies
It seems that dialing my first layer in to a height of 0.22mm seems to have solved some of my issue. I need to do more testing to say for sure. I'm still slightly undersized,
Nevermind, I just printed something that's supposed to be 36mm tall and it was 35.4mm.
According to the "Dimensional Errors" and "Vertical Dimensions", it should be related to my first layer. I tuned it last night, got it to 0.22mm and this morning I ran the same first layer test and it's like 0.1-0.15mm, it's hard to measure because it's pretty inconsistently squished. Now I'm wondering why my nozzle to PEI sheet distance would change? https://manual.slic3r.org/troubleshooting/dimension-errors
probable-pink•2y ago
there's a "rotation_distance" property in klipper, though tiny changes like that probably won't be precise enough.
I'll look into it, thanks. I did just dial my first layer in further and reran my 36mm tall print and it came out as 35.75mm; so it seems that first layer has something to do with it. My elephants foot went away too, which I think is the same "nozzle too close" issue.
optimistic-gold•13mo ago
I am facing the same issues right now. Prints seem to be around 1,5 - 2% short in the Z Dimension.
As its almost a fixed percentage i can rule out issues with the first layer height.
@tonystyles Could you solve your issues?