Recommended Hole Spacing
2x4 or 4x4
2x6
2x8
3½"
5½"
7¼"
(89 mm)
(140 mm)
(184 mm)
1¼"
1½"
1½"
1¼"
1¾"
1¾"
1"
1"
1½"
1½"
1½"
8
8
2
Clamp the Joint in Place
Note
Clamping secures the workpieces and gives you a better finished joint.
a.
Clamp here for the face joint.
b.
Clamp here for the edge joint.
6