If you’ve ever used a pocket hole jig, you’ve probably also learned that face clamps and pocket hole clamps come in pretty hand for keeping your boards aligned and tight when you are inserting the pocket hole screws. You may have also come across the situation when neither of these two types of clamps will work for you. Such as when you are trying to attach a one board into the center of another board that is wider than your pocket hole board is thick. This handle little pocket hole clamping jig is just the thing you need to make that task a little easier.
This pocket hole clamping jig can be made from a few pieces of scrap wood and a few carriage bolts and washers. I like to use scrap 3/4″ Baltic birch plywood because it is dimensionally sound, but 3/4″ lumber works great as well. You can also easily change the dimensions of this jig to accept larger boards, but I find using 18″ expansion sliders and 12″ rails gives me plenty of flexibility for most of my clamping needs.
All of the sliders use 1/4″ carriage bolts, 2 1/2″ in length. You can use wing nuts and fender washers, but I prefer to use standard threaded knobs with through holes. When installing your carriage bolts, make certain their heads are recessed into the bottoms of the rails, otherwise your jig won’t rest flat on your work surface.
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