Typically you see an FDM filament pop up that makes you do a triple-take as a result of it doesn’t appear to make a variety of sense. That is the case with a hybrid PLA/PETG filament by Stronghero 3D that incorporates a PETG core. This filament additionally intrigued [Dr. Igor Gaspar] who imported a spool from the US to have a poke at it to see why you’d need to mix these two filament supplies.
In response to the producer, the PLA outdoors makes up 60% of the filament, with the remaining being the PETG core. The PLA is meant to protect the PETG from moisture, whereas including extra energy and climate resistance to the PLA after printing. One other fascinating facet is the multi-color look that this creates, and which [Igor]’s prints completely present. Discovering the proper temperatures for the mattress and extruder was a problem and took a number of tries with the Bambu Lab P1P together with mattress adhesion troubles.
As for the precise properties of this filament, the layer adhesion take a look at confirmed it to be considerably worse than plain PLA or PETG when printed at extruder temperatures from 225 °C to 245 °C. When the shear stress is placed on the fabric as an alternative of the layer adhesion, the outcomes are a lot better, whereas torque resistance is best than plain PETG. This can be a sample that repeats throughout affect and different checks, with PETG extra brittle. Thermal deformation temperature is, unsurprisingly, between each supplies, making this filament principally a curiosity except its properties work a lot better in your use case than a non-hybrid filament.
