|Shelf Pin Jig
I like drilling shelf pin holes in the top, bottom, and both
sides of a box so that it can be used vertically or horizontally. But that
means aligning and spacing of all those holes becomes fairly critical. After
all, you don't want crooked or wobbly shelves. Nothing works better for uniform
spacing than a layout jig.
I use a simple jig made out of 3/4"-thick
scrap material (see Shelf Pin Jig). The jig leaves a starter dimple at each
hole. The dimples help keep the bit from wandering.
Simply mark the
position of the first hole, line up the jig on top of the hole location, and
lightly tap the two nails. Then slide the jig so its end is over the second
dimple, and tap the nails again to mark the next pair of holes.