Routing spars extensions
We had a good day today working on the top wing spars. The plywood plates have been epoxied to all the spars where the scarf joints were put together. The next step was to bevel the top and bottom of each spar extension to match the bevels on the rest of the spar inboard. We used a long steel straight edge to project the corners of the spars out to the new sections. With a little head scratching and tinkering around, we figured out a simple way to set up a fixture for a laminate trimmer to make the cuts. It took us a couple hours to get the first one laid out, setup and cut. It came out great. The remaining cuts went faster with the last taking about fifteen minutes. We should be able to complete the same thing on the other wing tip in an hour to an hour and a half. We'll try to knock that out during the next session later this week.
Here's a picture of the result. The spars are still about 3-4 inches longer than they need to be. They will get trimmed down when we locate and install the new ribs.
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