The next step is emphasized in the manual. Larry stresses that the accuracy of the forward spar to the root rib will effect how the rest of the wing is built. This makes sense since the “combs” will line up with the root rib and any deviation from 90 degrees will be duplicated all the way down the wing.

I line up the last rib dry over the plans. This helps to ensure that the spars are going to line up with the root.

A jig is provided in the kit just for the purpose of aligning the forward spar to the root rib. I start by using this jig them double-check with squares and fixtures of my own. By aligning everything on the plans and using SR’s jig the results are very accurate. I lock everything down with magnets and use 30min epoxy on ONLY the forward spar. The rear spar and leading edge will be glued after the front spar cures and the 1/4” washout spacer is positioned.

Here’s a stupid question. The spars fits snug into the root rib holes. How will I know if the bond is good enough? I coated the rib and spar, assembled, then wiped away the excess. But with the tight fit how much epoxy is left holding on? I plan to let everything cure overnight then give the spar a test to see if the bond is good.