<p>I am planning to install a <a href="https://www.thingiverse.com/thing:4138933" rel="nofollow noreferrer">filament diameter sensor</a> to my printer, but that sensor measures only one diameter. If the filament is not round, an additional error will be introduced.</p>
<p>How round are common filaments? How bad can I expect a filament to be? I mean what are bad values actually measured?</p>

CC BY-SA 4.0
2020-06-23T16:31:58.090Z
Haven't you measured it yourself? I can imagine that this depends on manufacturer. I expect premium filament brands to have a tighter quality assurance than non branded or cheap filament brands.
0scar
CC BY-SA 4.0
2020-06-24T07:58:03.020Z
I can also use my values as reference and hope that future filaments won't be worse than that
FarO
<filament-quality>
How round are filaments?
FarO
# How round are filaments?

(Asked by: username_0 on 2020-06-23)

I am planning to install a [filament diameter sensor](https://www.thingiverse.com/thing:4138933) to my printer, but that sensor measures only one diameter. If the filament is not round, an additional error will be introduced.

How round are common filaments? How bad can I expect a filament to be? I mean what are bad values actually measured?

**Tags:** filament-quality

> **Comments:**
> **username_1**: Haven't you measured it yourself? I can imagine that this depends on manufacturer. I expect premium filament brands to have a tighter quality assurance than non branded or cheap filament brands.  
> **username_0**: I can also use my values as reference and hope that future filaments won't be worse than that  

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## 0 answers

