While a big panel saw can be a help on any job, it's rarely worth the trouble to set one up for a small project. The Portable Panel Saw from PSI Woodworking looks like a good alternative. The tool consists of two parts — a 96-inch-long straightedge and a ballbearing assembly that bolts onto the shoe of any circular saw. Clamp the straightedge parallel to your cut, then run the saw with four of the bearings riding against the fence. The fifth bearing hooks over on the other side of the fence to prevent the saw from walking away from the cut line. The ball-bearing assembly flips out of the way so you can use the
