definition of "Chuffing"

[varq]

Can anyone define this term for me?

[nevtangle]

Can anyone define this term for me?

You should try the search option. It took me a matter of 10 seconds to find this:
http://automags.org/forums/showthrea...ition+chuffing

[varq]

ok thanks.

[Pneumagger]

"Chuff" is an onomatopoeia.

That is, the word describes the perceived audible noise that the Automag makes when the level 10 stops a chop or the marker is badly short stroked.