Highly sophisticated alignment jigs

[Mike Griffin]

I have seen some real sophisticated high brow complicated alignment jigs on here so I wanted to share mine.  Although a degree in Trig or Calculus would be helpful, you can probably slide by on a few basic tools.

Mike

[Mike Griffin]

Oh, one more picture. 

[john e. holliday]

Some where on here a person showed using a Work Mate to align fuselage and wing.  There are many ways of doing things as I just preglued a wing into my latest plane and my squares say it is better than the jig I used once.

[Steve Thompson]

No trig or calculus needed.  Swanson speed square comes with a book of tables!

Thanks for posting pictures.  These kind of pictures are helpful to many folks.

[Geoff Goodworth]

I can't speak for any of the other people in the collective we, but I check and shim by desktop before I start aligning and assembling a model.

[Mike Griffin]

It looks like having the wing and fuselage squared up is dependent on the table top being level.  How do we know the table top is level? 
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Take my word for it Rusty.... it is level.

[Chuck_Smith]

What, you guys don't have CMMs in your shops?

[Perry Rose]

Two large plastic triangles, a flat surface, a tape measure, an incidence meter and a good eye is all you need. As long as all work is done off the flat surface, level isn't required.

[Mike Griffin]

I hope everyone realizes I was using tongue in cheek and kidding about the sophistication of setting a wing in a profile fuselage by using higher math.  It really is not difficult to do this just by using some basic common tools.  Your eyes are the greatest tool you have.

Mike

[dave siegler]

There is a lesson here:

Know what your reference  line is. 

In this case because there is a bubble level and a square, the flat table and gravity are the references.

My old bench had a flat but non level table, I tried to use the Robart incidence meters and could never get them to work right , because the table was about 1/4 of a bubble off level.