This Wall Mount Paper Holder was designed for my workshop to accommodate a paper roll with an outer diameter of 150mm and an inner core diameter of 24mm.

I printed it in PLA, and in my opinion, the strength is good for its intended use. If you want better edge quality on the fitting area, you can print it with supports. However, I printed it without supports, and it worked fine.

For initial testing, I printed the rod in PETG, but the recommended option is to use a wooden or aluminum rod. A broomstick handle is generally a great choice for this purpose.