2.9. TROUBLESHOOTING
Z wobble
Even if the dimensional accuracy of a single layer was correct, several
stacked layers might make the hole smaller if they’re not exactly aligned.
Z wobble caused by mechanical issues will reduce hole size to the internal
envelope of the stacked layers:
Figure 2.69: Z wobble changing layer stacking.
Non-regular filament section
Low-quality and medium-quality laments are not very regular in diameter.
If you measure their diameter along a single meter of them, you’ll often
nd many dierent values (and many low-quality laments are even not
perfectly round in section). This continuous variation in diameter will
produce irregular ow and the resulting hole will still be the internal
envelope of all the layers:
Figure 2.70: Variable lament diameter changing layer stacking.
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