Lazyman
 commented about 3 hours ago
new
I like Marius Hornberger's solution where he used blocks with an off center hole sized based upon the spacing of his dog holes.  

It was that concept that made me zip off on a tangent with my zig-zag design.... however, if that board was a tad smaller (thinner) both sides' blocks are at maximum reach, so he would have to add extra padding.  Though there might be a squeeze when the cams are closed... basically, the design is more mathematical than just cut and go.

If your first cut is too short... Take the second cut from the longer end... LBD