Rockwell RW9261 BladeRunner Circle Cutter

This is probably one of the easiest to use products right out of the box.The circles cut are very accurate in diameter.It does work best on solid wood,but works well on plywood.The instructions do indicate that cutting at a slow pace is best,that is accurate.If you move through the cut too quickly it will have a tendancy to push the blade sideways and elongate the circle slightly.This can be corrected by moving through the cut again,extremely slowly,and rounding out any elongated edges.Perfect for anyone wanting to work with circle cutting for crafts or professional woodworking.

Copied from my review of the Rockwell BladeRunner cutting tool.One good feature is the separate, optional circle cutting accessory. The system is ingenious, well thought out and works nicely, permitting circles of 18" maximum diameter. The system is really designed to cut out round pieces. Yes, you do cut round holes, but the process requires you to make a straight cut through the stock first. Oh well, that's what wood putty is for, I guess.

All Plastic. Guard must be down or blad will bend and rub up against plastic and melt it.Once guide is attached to the wood it is difficult to place in the small hole on the circl cutter. Small piece are easier to attach to the circle cutter.All Plastic!It's ok, not great.You get what you pay for.

The demo video and the directions that come with the gadget both assume that what you want to make is some wooden discs, perhaps as wheels a for doll's wagon or such.If you're working on a DIY loudspeaker project, though, you probably don't want a cut running through the baffle from its edge to the hole you'll cut to mount the driver in.In my case I'm building a pair of small subwoofers with nominally 10-inch drivers mounted in 14-inch square baffles. To do something like that, first, before you screw the centering disc to your workpiece, mark the outer edge of the hole you're going to cut by measuring your radius along one of your diagonal lines from the center crossing point, then drill a 1/4-inch pilot hole where the edge of your circle will be. Then attach the centering disc and lay the workpiece on the gadget with the saw blade poking through the pilot hole. Next crouch down, squint at the underside of your workpiece and fiddle it around until the centering disc fits into the center receptacle on the gadget. Then cut your circle. A bit awkward, but you can do it.My project calls for a mounting hole with a diameter of 226 millimeters. Measuring and setting up my radius as accurately as I could gave me a hole perhaps 3 or 4 millimeters wider than that, but still usable. You'll probably want to practice measuring and cutting on scrap material before you start working for real.One other point that might not be obvious. The gadget will indeed cut circles up to 18 inches' diameter, but paradoxically the smaller the hole you want to cut the smaller the workpiece you cut it in will have to be for its corners to clear the base of the arm as you turn it, because shortening the radius moves the workpiece closer to the side where the base of the arm is set.This circle cutter and the tool it goes with are not what I'd call heavy-duty equipment, but they're quite useful for small jobs.

I rated it thus because it is handy, works well and easy to use. I have only used it a few times but it is better then any thing I have used in the past. It exceeds every thing I expected of it. The set up is very easy. Just "click" it on, cut , "pop" it off and you are done. The settings are very accurate and easy to adjust.

I had a lot of fun with this little jig for the Rockwell Bladerunner. It cuts good circles, but not perfect ones. There is always a little berm at the end of the cut, but it is easy to sand off. Over all, I am quite happy with this tool.

Poor quality construction. The ruler is not accurate and will not produce the desired size circle without lots of effort and waste.

I have the BladeRunner and only use it once in a while. I like this accessory for what it does. Used it once so far and found it easy to setup and make my circle cuts in light hard board and 1/4" press board as well.