I printed mine in 2mm with 25% infill except for the extra support which I did in 50%. Works great!
what size bearings did you use?
Here’s exactly what I got. I think they are just regular fidget spinner bearings.. LONMAX 608 Steel Ball Bearing 8mm x 22mm x 7mm For Tri-Spinner Fidget Toy Hand Spi... https://www.amazon.com/dp/B06XTZJDCC/ref=cm_sw_r_sms_c_api_i_7NTyCbQMFEW3S