Screw chippers ? (a device, not an expression)

[pdqdl]

I just stumbled across this concept. Has anyone ever seen or used one of these things? They look like a horribly expensive and difficult machine to maintain.

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[pdqdl]

Here is another view of one:

 

[pdqdl]

It looks to me like it relies more on force than velocity to chip the wood. I'll bet it is a ***** to get cleared if you plug it up with an overload.

It reminds me of chainsaws in the old days, when gear reduction was considered the best way to force a chain through a cut. Velocity cuts better, I believe.

 

[flushcut]

Interesting!

 

[a_lopa]

nice one,interesting