This month's item, a knife-setting jig, came with a planer we purchased a few years ago. It's used to set the angle of the blades on a planer or jointer. To see how it's used, click here. You may be familiar with a bulkier, more common style, like this one. Knife-setting jigs shouldn't be confused with knife jigs, which are used to sharpen blades. For a close-up of the main pic, click here, or here for the flip side.