My fathor is being a pain and wants to cut som folding doors which have some alumin side posts in them with my good 12" dewalt finishing blade the one that cost about $130. I would perfer he didn't but he thinks I am being a jerk and redulicus not letting him. Will this hurt the blade at all if I let him? It is a carbide tooth blade so I din't think it will I just save that blade for special jobs thought and want to make sure.