important when hand cleaning that you whipe all viruses below your fingernails.

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set bridge flow ratio to 1 so you get enough material for the brushes. If you want to decrease stiffness of the brush reduce to 0,7 - this was the lowest amount which gives me good brushes. I used PETG and PLA - both materials work fine. PLA gives a light stiffer brush.
So this model can be used for PLA and PETG. Make sure you have recognition of small walls active.
PETG can be cleaned in a dishwasher.