Top Right Wing Construction
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Top Row
Photo #1 -My precision wing tip jig.  Decided to make the tip separate from the wing so that it would be flat and true when glued to the wing.  Doesn't look pretty right now but it is straight and square.  Not complete yet.
Photo #2 - This shows the completed wing tip being slipped in place for gluing between the spars.
Photo #3 -Tip is on--clamped and gluing.
Photo #4 & 5 -I used two methods to make sure my wash out was exact at the tip.  I wanted a degree and a half even though it probably isn't necessary with a rectangular wing.  First I used Model CAD to determine how much each rear spar would be raised from the table.  I wanted the main front spar to be flat on the table.  This showed I needed the tip to be raised by 5/8" so I made two blocks with the one for the tip rib being 5/8" taller than the root rib.  Then I checked this with my Robart Incidence meter that I always used on my models.  Cost is about $20.  The tip is exactly 1 1/2 degree up on the trailing edge from the root trailing edge.  Soooo it was time to apply the epoxy. 
 

Bottom Row
Photo #1 -All clamped up and setting up.  Damn this looks nice!  Just something about a row of ribs, all lined up.  Time for my monthly beer.  A thirty pack lasts about 2 years unless the kids show up.
Photo #2 -Time to glue and nail the geodetics between the spars.  Have also added two of the front/top longerons.  Decided on 3/16 x 3/4 pine for the geodetic pieces. They have a slight bow as they are glued to the ribs.
Photo #3 -Clamping on the first part of the leading edge "D" section.  The 10 mm ply was pre-bent.  I first squirted it with water (a lot) then slipped about a dozen rubber bands around it, which caused it to bend.  I did the squirt business about 4 times over a 24 hour period letting it sit overnight.
Photo #4 -Inside the "D" section shows a good mating of materials.
Photo #5 -I have the airfoil datum line penciled on the rib so when I clamp on the Robart Incidence meter I know the starting point.  I wanted the root rib at zero and was OK. Then I checked it at the tip, the same way.  Once you put in both sides of the geodetic strips the wing is not going to twist anymore so better get it right before the glue sets up.  In effect you have made a box of triangles.  Writing in the picture is blurred but it says the meter shows 1.5 degrees of washout.

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