About this 3D model

This was originally modeled in Onshape, then imported to Tinkercad for the lettering portion. My boss asked me to make this model for my work's Emergency preparedness program. I have yet to print it, but if it works correctly, the arm ballasts should be sized for US nickels to fit into, and the center hub takes a standard 608 bearing. (i'm a little fuzzy, loading original onshape files into tinkercad throws off the sizing.) I'll try and print one this weekend to verify.