A 3D-printable token to release shopping carts. The key has a hole so that it can be carried on a keyring and always be available.We provide two versions as STL files. One in the shape of a Swedish 10 kronor coin, and a blank so that it can be used for any size of coins. Just 3D-model a simple flat cylinder in the size of your coin and (Boolean) join it with the blank.Video:http://youtu.be/P_Wzamr9jHMBy Creative Tools- http://Creative-Tools.com- http://google.com/+CreativetoolsSe- http://twitter.com/CreativeTools- http://facebook.com/creativetools- http://youtube.com/creativetools-http://instructables.com/member/CreativeTools