Why is PETG a better choice than PLA for bins and crates?
PLA is stiff but brittle, so a loaded bin concentrates stress at a single layer boundary and splits there. PETG is a glycol-modified PET, which makes the polymer chain more flexible: impact loads spread through the wall, the part flexes instead of cracking, and layer-to-layer bonding is stronger. PETG also resists moisture and many common chemicals better than PLA, which matters for parts that live in a workshop. It is not a high-temperature grade - above roughly 70 °C, ABS or PC is the right choice.
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