Erik Nygren 
Earlier this year I helped a friend of mine by designing some assistive devices for her, including this wheelchair tray with mounting arms printed on my #Prusa printer and combined with a tray made from poplar. The tray slides onto the arms of the wheelchair.
Model for the wheelchair tray, designed in #FreeCAD: https://www.printables.com/model/1408124-tray-for-a-drive-wheelchair
