Foam cutting help
...and one last picture of the various jigs, templates, etc. The board, alumimun channels, window locks (on drop arm), rollers etc are all from Home Depot (about $40 total)
To figuring out where the inner line attached I used:
Length of drop arm * tip cord / root cord
For my wing, this was 40 X 7.6 / 18.5 or about 16.4 inches. Then a few test passes to get it exact (you can almost see the L/E & T/E marks on the templates that I used for this)
The blocks holding the C template have a pin that goes through an alignment hole on the cord line. I used these to properly set the height of the template before drilling the L bracket holes along the bottom.
I spent the last two months researching and making all this stuff and about 1 hour actually cutting cores! I am glad I decided to cut my own.