Door knob puller

Updates here: https://www.thingiverse.com/thing:2894032 Edit 22 May 2018: added more items. This is a collection of knobs that can be useful when you get one broken. A 3mm hole is just a marker for the center point. More will be added later. Tinker it here: https://www.tinkercad.com/things/bKe7ZCKkXVv