spinny top

Print the tops base given here. Then print Irv Shapiro's bed adhesion test at 50% scale. (4592719 -- you will need good squish settings and good cooling to get it right!). This will be the tops handle/axle. Mate the handle to the base. No glue is needed. Spin it and have fun. A great reward for all the hard work fine tuning your 3D printer :D .