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I'm finally getting around to messing with this stuff. Now I can balisong in the dark.
Step 2 is determining how badly all the particles of gumf in this filament negatively impact the mechanical strength.
Edit: I probably should have said this in the first place, but this is Overture green glow PLA.
The model is my Rockhopper balisong utility knife. Go check it out -- it's fully printable, even the hardware.
For strength there are some decent GID PETG options. Glow for all these is pretty good with regards to intensity but poor for duration. Be ready to replace your brass nozzle a little sooner than you thought. Using a oxbidian nozzle and it seems to take the beating well.
I got really good results with CC3D GID PETG and a steel nozzle.