Masonry oven modular ovens, all these methods are still in use. In all cases, the ovens typically go under a roof or some kind of weather protection. Perhaps the most significant change in masonry oven construction practices is insulation. Since masonry loses heat as fast (or faster) than it absorbs it, early ovens extended bake times by increasing mass. Thicker walls held more heat to bake more bread — but only up to a point. Since heat moves from high to lower temp, the outside of the oven can’t get as hot as the inside — unless you wrap it in a
Conservation and restoration of paintings stretcher. Canvas can also come in the form of canvas board. As with all parts of a painting, deterioration is inevitable. Re-lining or lining treatments was used to added support to the original canvas until it was determined that it created more damage. Strip-lining is now used instead. Strip-lining involves reinforcing tacking that has weakened. Tears in the canvas are repaired with adhesive or sewing. Ceramics vary widely in their construction, style, and use. There are three types of ceramic objects. They are earthenware, stoneware, and porcelain. Each of these types of ceramic objects are fired at different degrees and