identify this movie - Name of an independent film whose making was documented by another film....Heart of Darkness kind-of-thing

The film and, I believe, the Documentary about the making of the
film start with C. Like Corvalis, or Cromanthus....

The
documentary was shot up north in the US, maybe Wisconsin, Michigan. It stars the
filmmaker, and his family and friends (the stars of the actual film). It is a strangely
compelling documentary because the film maker has no money, no real obvious skill and no
real tration with anyone in the community that might want to see him succeed except an
Uncle and the one best friend, if memory serves.

There is
tragically comic scene where the guy is documenting a segment in which a guy gets his
head slammed through a cabinet (the actual movie) -- and it obviously is very painful,
no stuntman, no evident re-engineering of the panneling to make it easier to put a head
through, etc....the documentary keeps rolling as we see the actors and director come to
an impass becuase the guy really hurt his head.

And in the
end, the director (kind of a goofball, dyslexic type with lots of passion) gets to finsh
the film because his uncle dies and leaves him 50k. The documentary guy is very
dissapointed that the director kept the original working title (the one I can't f'in
remember...).

I can remember some other details but the two
or three above are the most memorable. Think I saw this on Netflix streaming about 4
years ago when there was really no content. Please help me.