The Barrel Cart is a sample from my "Carts and Wagons" pack available at http://www.heroshoard.com/generic-fantasy
All parts are designed to print flat without rafts or supports. These were printed at .1mm in PLA. All parts have manifold.
The wheels can be attached to the axles using small bits of 1.75mm filament or bamboo toothpicks.
Monoprice Maker Architect 3D