Introducing the Filament Transparency Tester, a versatile tool for assessing filament opacity. This tester includes slots for testing various filament thicknesses, including 0.2mm, 0.4mm, 0.6mm, and 0.8mm. Additionally, there are slots for testing the transparency of a combination of filaments, such as 0.6mm with a 0.2mm layer on top, repeated twice for comparing different filaments.