Bonding the Cores to the Spar.

Pat helped me hot wire the cores and now it's time to glue them to the spar. The trick is to maintain perfect alignment until the epoxy cures.

After sitting through an exhausting training course, Bill Hunter became the the chief epoxy mixer.

Applying the mixture of epoxy and microballoons to the backside of the foam core.

Applying the fiberglass "rib" between the first two cores on each side.

Setting the first core into place,  Good thing Bill is a CrossFitter.

We used a hot glue gun,  nails and filament tape to hold everything in place.

Some pour in foam is used to fill the gap between the center cores.

Sam & Bill taping things up.

All the cores have been joined and held together with filament tape.

The next day I removed all the tape, nails, and excess foam.  After an hour of sanding, things are looking pretty good.  I also trimmed the nose of the center section, where it will butt up to the firewall.

I have so much work remaining on this project...  Thanks to my buddies for helping to move things along.