I dont have a 3d printer, so anybody who can test my filament will be welcome. i also have access to mahagoni wood, to mix wood dust into the filament and maybe make mahagoni filament. i guess i ...

My practical 3D printing advice is simple: if you're buying a new 3D printer, get one with a filament runout sensor. If you don't have one, see if it can be added and invest a few bucks to upgrade ...