Specially, [Thomas] noticed that the areas of the model where the extruder needs ... the print a little more. Filament to filament performance seems to indicate that PLA was the least affected ...

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Randolph said Printed Solid’s Jessie filament is made using raw PLA or PETG mixed with a sprinkling ... The pellet mix is fed into a heated extruder with a long screw that blends the materials ...

Second, everything needs to be very clean — no cross-contamination with plastics other than PLA, no metal bits ... not everyone has access to a fancy filament extruder like his, so this may ...