strange color change in wood PLA
This problem showed up while printing with JAYO Walnut Wood filament. The print looked like it had been made with two different colors, even though it was printed with one spool, one color, and one print job. The strange part: the lighter areas appeared exactly where parts of the model were being reheated more often.
Normally, wood filament gets darker when printed hotter. But in this case, the exact opposite happened. So I started testing.
In this video, I show:
how print temperature affected the color,
why some areas of the print changed shade,
how layer timing and reheating played a role,
why the filament started behaving almost like foaming filament,
and how I discovered that moisture in the filament was the real cause.
The key conclusion is simple but important:
when this wet wood filament heats up, the moisture turns into steam and causes the material to expand. That means the amount of wood particles and pigment stays the same, but it gets spread across a much larger printed volume. As a result, the print becomes lighter in color and also rougher in texture.
After drying the filament for 8 hours in my SpacePi filament dryer, it printed normally again.
So if your wood PLA is printing with strange color shifts, rough surfaces, or unexpected dimensional changes, don’t just look at nozzle temperature. Check whether your filament is wet.
If you enjoy real-world 3D printing troubleshooting, practical testing, and honest results, make sure to subscribe to the channel.
Have you seen something similar with wood filament, PLA wood, or another specialty filament? Let me know in the comments.
#3DPrinting #WoodFilament #WoodPLA #PLA #FilamentDrying #WetFilament #3DPrintTroubleshooting #BambuStudio #JAYO
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strange color change in wood PLA
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