sentence: Joe Morin from Titan alloy is talking about welding aluminum. sentence:  He is doing a tutorial on how to fix aluminum. sentence:  He shows a new product called Nova, which is an electrode for cleaning dirty aluminum. sentence:  He shows two aluminum plates that are joined together for demonstration purposes. sentence:  He takes the Nova rod and shows how he can weld the two pieces together. sentence:  He begins welding the two plates of aluminum. sentence:  Then he hits the plates with a hammer and scrubs off the dust. sentence:  He shows the back side of the plates and how it is welded together.