I mentioned the spearhead from Rovaniemi, Marikkovaara before. It combines twists and tooth-like patterns and the pattern welding is superbly executed. I continue to experiment with recreating it and just completed another experiment. Here are some in-progress photos.
The two pictures on the right show the assembled core of wrought iron and the twisted bar bend to match its shape. The first step in welding the two pieces together is to create a solid weld at the tip. The other photos show the next step in assembling the spear as well as the pattern right after heat-treating by quenching in oil. The final result can be seen at the top left. This includes forge-welding a socket and attaching it, too.