This video covers how to glue up strange angles that normal clamps cannot do on their own.

While this video only shows a basic triangle, this can be use for any shape that does not have two pieces that are parallel to one another. Simply cut the matching angle onto a jig piece, flip it around, and stick it on one side to create a new parallel angle.

If you have any questions, or a comment to add, please feel free to leave it in the comment section.