Play dough roller

My 4 year old really enjoys playing with a play dough. Since he wanted to make flat thin parts I made a roller for him. It is meant to withstand sometimes rough child play. Based on this also wall and infill ratios are adjusted to have a balance between cost, material and quality. It is designed also with repair-ability in mind and the two handles are connected using M 2.5x14 self-taping screw for plastic. I think the ones that are coming with the printer should also work. It is made of 4 pieces1.) Centre rod - Print without auxiliary fan2.) Handles3.) Roller Ideas for future:- Make the roller textured (brick texture, star texture,…)- Make version compatible with M3 machine screws