A short screed on Scarf, Butt and Splice Joints

Scarf Joint - It is used especially in wood work and metal work when the length of the material is not long enough. The pieces overlap and are glued. Another way to make a more durable is using splice joint and butt joint. The splice joint is also for elongation whereas the butt joint seems to me is for case when you have to join at an angle. Usually one uses screw or other things to reinforce it. Another word that was asked at today's readers digest word power was screed and it means a long boring speech. Merriam Webster has few more definitions including a leveling device drawn over freshly poured concrete.