Step 63: Build Tunnel Assembly
Part 2
E: Attach the tops of each Tunnel Side together using 2 (MB1) #12 x ½" Pan Bolts (with #12 Lock Nut) per side.
(fig. 63.4 and 63.5)
Fig. 63.4
Fig. 63.5
MB1
12 x
#12 Lock
Nut
Hardware
#12 x 1/2" Pan Bolt (with #12 lock nut)
MB1
117