February 18, 2015 - Glue Upper Wing Spar Together

Here I am glueing the last spar together:  the upper wing.  I've got my little dixie cup of T-88 epoxy and popsicle stick.
   
For each of the 18 spar spacers -- the 1/8" thick plywood piece that goes in between the spar ladders -- I have to coat eight edges with epoxy:  each spacer edge, the vertical area on the spar ladders, the vertical gusset sides, and then again on the spacers where the gussets touch.  It's time consuming, taking a couple of hours.
   
A close-up of two of the spacers glued in place, along with the vertical gussets which really strengthen the spacers.
   
The view from another angle.
   
Once everything is glued, I screw down all of the spar table clamps.  Then let dry for 24 hours.
   
A day later, I remove the clamps.  A sharp eye will notice I have the spar resting on top of a spar plate.
   
Close-up of the spar spacers.
   
   
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