Trimming
Trimming is the cutting of the edge of a tree with the help of a saw. The edge of the tree , also known as the missing edge or the edge of the forest , is called the bark (bark) of timber up to the cambium , the growth layer that gives the wood a smooth surface.
When trimming , a board is separated from the remaining parts of a plank , usually with the help of a special circular saw or table / sliding table saw . These components are bark , bark, etc. In addition to simple trimming, there is also parallel trimming. This process does not only mean the separation of the remaining components, but also the parallel cutting of the board edges, which run lengthways / grains to the board.
When trimming, it is very important to make sure that as much residue is removed as possible, otherwise the wood loses value and can significantly reduce the value of the entire piece in further processing. On the other hand, there should be as little waste as possible. In the case of oak planks, the sapwood must also be cut off, as it has little strength and is not weatherproof.
The blending rates are between 75% and 95%. The difference is that electronically controlled machines can work much more precisely than humans.