Bottle Cap Insert for Knurled Shaft

Another print based around a Source Perrier bottle's cap using Tough Ink from M3D. Although this fits rather snugly against the ridges of the inside of the cap, a little glue won't hurt it, though it may just be best to print fairly dense. I went with thick, hollow walls for demonstration purposes and speed, but I would imagine you'd get a much tighter fit if you went for even medium infill. Solid might require a bit of force.