The 4 x 6 timbers are pinned together with 1
inch dowels. Because the timbers are somewhat prone to swelling
shrinking, it is important to make oversized holes for the bolts that
hold them together, if you ever have any hope of dis-assembling the
for transport or maintenance. The holes for these pins are
with only minimal clearance.
Because of the depth of the side rails, and
importance of drilling the holes straight, a special tool is
We purchased a drill bit called a ship's auger, it is a single-flute
several inches longer than the rails are high. Choose a bit 1/8
bigger than the hardware that you will be using. We used 1/2 x 12
carriage bolts, and used a 5/8 ships auger.
The hardware is recessed at the deepest
of the frame, mainly for economics (getting 2 inch longer bolts cost $1