Well, I’ve run into an annoying problem, as expected. The PVC caps I ordered do not fit onto the plastic tube as I had expected. The caps are listed as 3 inches in diameter, but in reality they are 3.25 inches in diameter. This poses a bit of a problem in terms of waterproofing. In order to fix this issue, I have designed a 3D-printed ring which serves as a buffer between the tube and the cap. The ring needs a bit of sanding around the edges to make it fit perfectly, but once on the tube it’s a pretty great fit!
