By Adalheid Voigt. Midcentury. At Friday, January 25th 2019, 01:57:01 AM.
Wood can hold a lot of moisture when it is first harvested. What makes a kiln-dried frame better is that the process gets rid of most of the moisture inside the wood. Kilns are huge ovens with very strictly controlled temperatures and humidity. The kiln drying process can remove approximately 93% of the wood's moisture.
Hardwood is wood that we get from trees such as oak, maple, cherry walnut and other broad-leafed deciduous trees. This type of wood is stronger and better suited to most types of furniture making. Soft woods come from evergreen trees such as pines and cedar. This type of wood can bend or dent easily and therefore is not suitable where you need strength, such as in sofa frames. So while it is good to look for kiln dried wood, remember to as if the frame is constructed from hardwood rather than soft wood.
How long a sofa will last and retain its shape depends largely on the frame, and a high-quality sofa always has a strong, sturdy one: The best frame is made out of kiln-dried hardwood. The process of kiln drying removes all moisture from the wood, enabling it to retain its shape and stability over a long period of time. A frame made of green wood can shrink or crack as it dries. Softwood can bend and break easily, while knotted wood is prone to cracks.