Tube flaring bit - GIF

[mklotz]

In the video it appears that the pipe is handheld while being flared. I wonder if that is true? Seems as if the tool would generate a fierce torque on the tube.

[Jon]

In the video it appears that the pipe is handheld while being flared. I wonder if that is true? Seems as if the tool would generate a fierce torque on the tube.

Here's a guy making one, with a good dose of questionable handheld work:

Anyone ever try tying flies "held in hand"? It's much more challenging without a vise; somewhat of a dying art among old fly fishermen. This reminds me of that. But instead of a dying art, just dangerous.