This print turns a mason jar into a watering station for bees, or if it is legal in your area an open feeding station. 

You need to print 1 base and 8 of the grid pieces. The grid pieces are sized such that the bees can't get into the bottom of the waterer and drown. Make sure to poke a nickel sized hole in your mason jar lid before you flip it over.

(Even if it is legal in your area don't open feed during honey season so that you don't end up with sugar water in yours or others honey.)

If you are looking for an in hive mason jar feeder I have one of those as well. https://www.printables.com/model/917947-foulds-feeder-1000-in-hive-mason-jar-bee-feeder