Here is a pic of my clamping jig arrangement. First I lay the web on a piece of thick cardboard the same shape which is glued to the board. Then I clamp the cap-strips around it and lift the whole assembly from the board. Glue it together and presto, insta-rib. After the first couple glued themselves to the clamp I rubbed candle wax on the surfaces and it cured the sticking problem. Only 89 ribs to go!