Retract / Retraction Test Calibration

Made a small retract test. Most of the round structures just use 2 poles so often for moving there is only 1 axis moved. With using 3 all axis are involved - dunno if thats helpful :-)

Should be printed in less than 20minutes.

Made the poles 2,5rmm in diameter - thats a setting I found simply3d sometimes has issues with. So far if the retract result is goood, the print is good :)