I've looked for the same thing, all i've found is rather expensive
commercial models.
I figured on finding a larger engine-driven chipper with a bad
motor, and substitute a PTO hookup for the engine. that gets you most
of the way there if your PTO speed approximates the engine speed.

Rod Richeson wrote:
Anyone built a chipper before? I have a Kubota with 15HP at the PTO and
would like to build a chipper to aid in clearing some vacation property.

I looked in the dropbox and google'd but it seems everyone is asking,
and no one is answering.

Thanks,
Rod