Usually, the panel is not glued to the frame but is left to 'float' within it so that seasonal movement of the wood comprising the panel does not distort the frame. Frame and panel construction at its most basic consists of five members: the panel and the four members which make up the frame.
Fine beans can be boiled or steamed. To boil, bring a pan of water to the boil, add the prepared beans and cook for 3 - 8 minutes or until just tender but still crisp. To steam, place the beans in a steamer and cook for 5 - 10 minutes or until just tender but still crisp.
Simmer gently. Once you've brought the pot to a boil, reduce the heat to simmer and cook gently until the beans are as tender as you like them. This can take anywhere from 30 minutes for smaller, fresher beans, to two hours for larger and older specimens. Salt can toughen bean skins, but a lack of salt leads to tasteless beans.