I
cut up the 4 pieces of (spruce) wood for the harness blocks per plan. Then I carved out the
foam and glassed them at designated locations. Note that I rounded off the top
corners of the harness blocks to fit the curvature of the foam. The foam corners
are rounded off a bit to accommodate the 4 layers of UNI afterwards (Lay-up #6).
[Break] At this time I am out of my MGS285 resin, so are Aircraft Spruce and Wicks. The scheduled delivery is 2 weeks out at best. So, I shall be moving forward to Chapter 16 for the moment...
After
about a week of waiting, my MGS285 arrived. The next day, I got the spar prepped
and ready to do the outside lay-up. Since this lay-up requires the UNI to wrap
around the top and all the way around the sides, I have to raise the entire
center spar off the work bench on CS1. I propped up the center spar on a couple
of 4x4 wood blocks atop my work table. Not realizing that the center spar
is not well balanced (due to the thick spar cap on one edge - Section 6), it
tipped over, fell from the work table and hit the floor before I could go
oh-*!@#$%^&*.
The drop put a big gouge on the edge of the spar end
.
Susann (my cool headed better half) handed me some dry micro. I packed in the dry
micro and re-contoured the surface - all in 5 minutes (while I was chewing on my
own stupidity & carelessness). After the exciting opener, the rest of the
lay-up was long, tedious and tiring. We completed the entire task 12 hours later
- but it looked good!
Once
the glass cured, I flipped the center spar over on the work bench. I used a fine felt
tip pen and drew a line for the cut line along the seam. If you look close, you
can probably see it. Using a FEIN tool, I
trimmed off the excess glass and sanded smooth the edges. The entire task took me
about an hour and...
it
turned the center section spar to a presentable assembly. Notice the gouge at
the end of the spar that was patched up with micro and glassed over.
After
trim, I layed the wing root template against the trailing edge of the spar. The
spar is about ~.05" narrower than the wing root on each side - which is
desirable. The rounded corner of the spar made the gap look a bit wider in the
picture.