Ah, the latest in miracle tools. I haven't used the Rotozip per se, but the tool is based on a spiral side cutting router bit which I have used in a drywall cutter. The bit has a pilot at the tip which when moving from left to right pulls the tool into the work. This is fine as long as there is a pattern for the pilot to bear against. Working with this type of tool requires great concentration or zip you've lost control. I'm a tool freak. I've got maybe six sabre saws including a nice DeWalt, but when cutting ply for a boat I use my sidewider circular saw. The tool weighs 13 pounds and doesn't jump around. With a 30 to 40 tooth blade it doesn't rip up the grain too badly. I shoot for about 1/8' proud of the pencil line and then use a Ryobi hand power plane to trim to the line. I've fooled with routers and various bit combinations, including the sprial side cutter, but without time consuming patterns and setups I can't get the accuracy I want and can get quicker with the tools I've mentioned. Additionally, when you want to build that shop you've always wanted, that circsaw will come in handy.

: Has anyone used the rotozip (vs. a good sabre saw) for smooth cuts in plywood
: for S&G and what did you think?
: Thanks