After building the Woodgears.ca Screw Advance Box Joint Jig 2.0 (shown in the first picture), I decided there was room for improvement and built another based on Stumpy Nub's Box joint jig plans. I must say it works very well and they were both fun to make. The first thing Stumpy's jig did was to cut the plastic template used along the front, which you can see is quite uniform. More about the jigs and pictures here if you would like to see more or just plain wonder why I bothered!