Hello,
It might be obvious, but it hasn’t been for me until now, that if you want to use PETG or PLA (only clear, natural, or without color) for their biocompatible properties, you have to know that it is very important to:
- Use a stainless steel nozzle.
- Use a dedicated nozzle exclusively for biocompatibility prints.
I learned this by observing that TPU has contaminated my stainless steel nozzle, rendering it unusable for printing biocompatible materials.