Simple aircraft (enforced)

Remixed simple aricraft
This thing was designed to be easy to print and for small kids: without sharp edges and durable.
All connections were adjusted to be connected by M3 bolts
Use 5 bolts M3x12mm (or it can be 10mm but 2 of them is better to have 12 or 15mm)

There are mods v2 and v3. Difference is in 2 parts - v2 is vertical printed aircraft fuselage, v3 has horisontal aircraft fuselage

To print v2(vertical fuselage) use parts:
airplain2-wheel.stl
airplain2-p4.stl
airplain2-p3.stl
airplain2-p2.stl - orient it to print vertically but use brim or other tricks to keep it verical (I've used only 10mm brim)
airplain2-p1.stl

To print v3(horisontal fuselage) use parts:
airplain2-wheel.stl
airplain2-p4.stl
airplain2-p3.stl
airplain3-p2.stl - orient it to print horizontally
airplain3-p1.stl

Update: 27.04.2018
Based on kids tests added a reinforced propeller airplain2-p4b