It is an 80mm Y with 3mm walls 45 degree angle and Equilateral
thingiverse
A Facebook enthusiast inspired this project, and I invested 4 minutes in crafting it - the design should print flawlessly with a brim. Surprisingly, uploading took longer than actually creating the model... Internal diameter: 80mm, Outer Diameter: 86mm, yielding walls of 3mm thickness. Two versions are available: one features an asymmetric angle of 45 degrees, while the other boasts equilateral design principles.
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