After trying several different paper towel holders from thingiverse and all of them breaking after a bit. I decided to tinkercad up my own version. Based on what I learned from all the broken ones and heavily influenced by www.thingiverse.com/thing:2349060. (I used your screw, it is perfect, why change it.) This one has no internal sharp corners. So, it seems there is not such a vulnerable point. Yes, most of the others broke due to kids Being rough. This one has survived them. (Five plus years.) And as always, I use Elegoo Petg pro.