I have been using a Robobevel tool for a few months now. I am building a Wee Lassie II canoe, which is a 13' 6" one solo canoe with lots of curves.
I find that once I mastered the use of the tool that it works very well. It is well made and the ergonomics as excellent. The little plane that I bought separately is a high-quality tool that performs well.
Listed below are a few lessons I learned on how to be effective with the tool:
Adjust the plane to take a fairly deep cut. The goal is to shape the strips not smooth them.
Concentrate on keeping the edge of the plane in contact with the strip as you move it along the strip.
Stop every 3 or 4 feet and use a pencil to clear the waste from the plane. Otherwise, it will not cut properly.
Move the plane in the tool to cut in the opposite direction when it seems to be "digging in".
Once in awhile the tiny adjustment that holds the plane blade may become loose. Check it at when you move the plane to cut in the opposite direction.
John Van Buren