I have a large muffler from a full size pickup. It's outer dimensions are roughly 6 inches by 12 inches by 24 inches long. My plans where to cut the ends off, cut it in half, and make a forge that would be 6" x 12" x 12" but when I cut the ends off I found three inner baffle walls spaced at random intervals and tack welded to the outer shell. My question is does anybody know of an effective way of removing them with minimum shop tools? Or does anybody have any good ideas to remove them? Or should I just abandon the idea?