@Thomas_Sanladerer I finally got around to watching your filloween series. Thanks for doing that, I loved it. A couple of thoughts for future filament tests.
1: thermal performance. Print an ark that stands like a bridge. Place a known metal mass on the top of the ark. Put the assembly in a pot of cold salt water with a thermometer. Slowly heat the part until the ark sags. Most plastics have a TG less than 120, so they should sag at a given temp.
2: stiffness, a simple stress strain curve would be easy to measure with a calibrated load cell and using a lead screw /stepper to bend a bridge. This can be done with a printrboard and a load cell amplifier.
These were some ideas we had from ufid. Thanks for the data.