Back to the Left wing! I’d previously assemble the cores and matched the two wings as best I could.

Next was to ensure the top of the shear web area was straight. Using my box aluminium it was a hour or so slow sanding to ensure it was nice and straight. Mainly just a little foam off the middle.

The spar cap area needs to be 3.1″ wide and what I had was nearer 2.7″. I removed the wing out of the jig which was carefully screwed to the table and marked out the expansion area, cut it was a razor blade against the rulers in pic 2 and a bit of work with the permagrit tools.

The next day the wing was back in the jigs and I carefully rounded the edges and used the demel for any high spots in the glue joins.

I cut glass and got things ready as in pic 3 to lay up the shear web. This was a good 3-4 days work… believe it or not.

Ensuring a straight shear web

Widening the spar cap areas

The usual prep