Wings

[Kamcoman77]

Your printed nose rib looks great, but looks like it could be half as thick on the inside. The bottom piece is probably not even needed considering how stiff the arch portion is. I used aircraft grade 1/4" ply for my end nose ribs and 1/4" "hobby ply" (Midwest brand) for the interior ribs. I used 1" wide extruded foam with a crosspiece for my added ribs. After mockup, I decided that I only needed one foam rib between the ply ribs, except for the outer bay where I used two foam ribs. I used 1" thick foam because I wanted more support for the 0.8mm nose ply. Used T-88 for all joints. The nose section on my 1st wing feels very strong.

[Brock]

These nose ribs that I have were 1/8" too long.  So I cut them down.  But cutting squarly the ends of a hoop is a bit of a challenge.  3D printing to the rescue.  I made this jig to help guide each rib through the table saw.  Now they are all exactly the same length, and the length that I want.  Next is to draw and print up a jig that will hold them while I cut the stringer notch.

While I'm talk'n about 3D.  I did a  T88 glue test with the LW-PLA test cube.  T88 stuck to that foamy surface better than nails.  I eventually destroyed the cube and it was still stuck.  Too bad PLA can't stand the heat of sitting on the dash of my car (measured 153 degree today).  This is my test standard.  The PETG test sample did just fine but that is not yet made in foaming formula (LW-PETG).  So I have some LW-ASA on order to test out.

[Kamcoman77]

I made my nose rib notch jig from some scrap plywood. Ran the ribs through my table saw three or four times to get the 5/16" wide by 5/8" deep notch.