Today was resolving a real challenge. The spar with wings needs to go in and out of the fuselage cavity numerous times. I needed a way to hold the spar, move it tiny amounts up and down but primarily not have it suddenly shift. I was very concerned about the weight possibly snapping off a longeron if it shifted suddenly…or something even worse.

The solution was to support the wings at both ends and inboard and have two tables with jigs that could screw up and down a thread. You can see this in pic 3. I tweaked the jigs I’d made for the spar when it was on the ground. So I have 4 point adjustment on both sides inboard.

With one of these each side and the weight also supported at the tips the spar is very secure and I found I could just walk it into the spar cavity below the top longerons by moving very small amounts at each tip.

What was a surprise is that it is a super exact fit. Far too exact for tweaking or even fitting and flox. I’ll have to remove some material tomorrow so its a loose fit and then try lining things up.

Right wing stand screws up and down

Left wing adjusted with foam blocks

Center jigs, one each side