Butt welding they all are named with their particular shape. The joint also known as a square groove weld has many different forms in order to connect pieces of metal together and are all capable of bearing loads. There are many different types of joints such as lap joints, tee joints, butt joints, and also corner joints. Lap joints are two pieces that are end-over-end and welded together whereas butt welds are put end to end and connected that way. Butt welds are connected to each other with the thickness of the parent metal. There are many different kinds of butt welds
Mitre box in the mitre box are cut at 45 degrees and 90 degrees. The mitre saw combines the features of a mitre box with a backsaw. In the past, mitre boxes were constructed mostly of wood. Some have had metal guides fitted to reduce wear on the slots. Today, mitre boxes are also available in other materials such as moulded plastic and cast aluminium. When carpenters used to make their own mitre boxes, it was common to use a mitre box until its guide slots became worn and then make a new one out of scrap timber. There is still a