Printed in PLA and PVA on an Ultimaker 3 Extended at .1mm vertical resolution and 50% infill I loaded "PLA_PVA Wagon Upright.stl" model into Cura 2.3.1, then in the Cura 2.3.1 "Preferences, General" pane, I turned off "Automatically drop models to the build plate", then lifted the model 1mm vertical and printed the result. Lifting the model allows Cura to print a bed of PVA to support the wheels which avoids flat spots where the wheels would otherwise come in contact with the build plate. Place the finished print in a water bath. I use a printed circuit board etching tank with clean water, a heater and an agitator. The PVA dissolved and I had a functional fully assembled Little Red Wagon in just over 2 hours.