I completed the Main Center Wing Spar(page ONX-W16) today...minus some solid rivets I have to drill out and replace.
Started this Feb 27 2015 - finished today Sept 27 2015
Feels good to have it done and on to the next assembly.
Am building in a hangar at Mesa, Falcon Field (FFZ) in Mesa Arizona. The past few months were => HOT.
As the Wx cools down also the assemblies are easier to build I look forward to stepping up progress.
The spar build has taught me a lot about working with thick stack up's and the different requirements between Solid Riveting Thick vs Thin layers of Al.
Hammer Head with a quarter Snap Roll on the Up Line - Ready - Ready - Now!
Don