Pro PCTG is very sensitive to cooling, and your printed strength can be noticeably affected by your cooling settings.
Last month, we created a profile for our Pro PCTG-CF10 filament on the Bambu Lab X1C and H2C. Carbon fiber-filled materials are notorious for having poor layer-to-layer adhesion, even though inter-layer adhesion and part stiffness are much better.
To improve the layer-to-layer bonding, we ran a series of cooling profile tests to reduce the cooling fan speeds as much as possible without losing part fidelity.
Effectively, it reduces the cooling fan speed and turns off the chamber exhaust, allowing the previous layer of the print to retain more thermal energy. This means that the next layer laid down will bond more completely with the previous layer.
We've now updated all Bambu Lab Pro PCTG profiles to follow this same cooling strategy. You should notice stronger interlayer part strength without loss of part detail and fidelity.
You can download the updated profiles from our Pro PCTG Profiles knowledge base article.
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