Tail wheel for Raven RC plane and similar

This is a tail wheel and support for Raven and similar planes made of "depron".
You will need too:
- 4mm diameter (external) teflon tube
- 3 mm diameter teflon tube (you can use the ink tube from a pen)
- 2 mm steel rod
You can blend the rod in my way or something similar
The wheel is based on http://www.thingiverse.com/thing:147882