Building the Jig That Held a Wing Together

An aircraft that had been grounded for over a decade flew again. I built the jig that helped get its wing back together. That program, and the years of work that got it there, is what this shop was built around.

The Jetcruzer 500 had been shelved for years. Design work going back decades, the program stalled, the aircraft sitting. When it came back, the wing needed work. Not a quick fix. The kind of work where you’re removing components, repairing and rebuilding sections, and putting it all back together, and the wing needs to stay in one consistent position the entire time.

The wing has mounting points: where it attaches to the fuselage, tie-down points, and where the vertical sail attaches. To work on it the way this job needed, we removed the wing from those points entirely and built something to hold it instead.

That something was a jig. 44 feet long, standing vertical. Built that way on purpose, because a vertical orientation took up a fraction of the floor space a horizontal setup would have needed, and made it easier to access different parts of the wing as the work moved around.

Getting the wing onto the jig meant gantry cranes. Lifting the entire wing into position and mounting it to the jig at those same points: fuselage mounts, tie-downs, vertical sail mount. Once it was secured, we added auxiliary mounting locations as needed, positioned to support the wing through whatever stage of the work was happening.

Then the actual work happened. Repairing, rebuilding, working through the wing section by section, all while the jig held it exactly where it needed to be. No shifting. No drift. The wing stayed in the position it was designed to sit in, the whole time.

When the work was done, we took the wing off the jig, mounted it back onto the aircraft at the same points it came off of, and checked it.

No deflection.

The wing went back on exactly as it was designed to fit. Everything we had done to it, every repair, every rebuild, held up against the one thing that actually mattered: did it go back together the way it was supposed to.

That’s the part that stuck with me. Not the jig itself, even though building a 44-foot fixture to hold an aircraft wing is its own thing. It’s that the jig did its job well enough that the wing came back together with zero deflection. Proof that everything stayed exactly where it needed to be, the whole time.

The same thing applies to anything that needs to be held in place during work. Not just aircraft wings. Large assemblies, complex fabrications, anything that has to come apart, get worked on, and go back together without losing reference. If it needs to be held, it can be held, and held precisely.

That’s the standard. The job isn’t done when the work is finished. It’s done when it goes back together and holds the way it was designed to.

Parallax Manufacturing. A different angle on what a machine shop can be.

If it needs to hold up, get in touch.