Learn how to 3D: Knife Edge / High Alpha Knife Edgeaerofundanaerofundan8:29 amMarch 4th, 2019 Learn how to 3D: Knife Edge / High Alpha Knife Edge Posted byaerofundan 03/04/2019 Videos 0 Share: Related Articles Balsa 3D Performance at a Great Price – Precision Aerobatics Katana 52″ Once upon a time in Malaysia XR-61T stress test by Alex Fredrickson Alex quick flight after work with his Katana 60! Michael Wargo at RCACF in Apopka Florida PA XR-52 slow 3D with Dan Dominguez