Marking Knife

This knife is made from a jigsaw blade. It is loosely based on this design. since I didn't have anything suitable for a ferule, so I cut a slot in a 1" long piece of stainless steel rod, and glued in the blade. That worked fine except the rod was wider than the blade, and there were ugly gaps on either side of the rod. So I glued in 2 pieces of brass, and flushed them up. I then drilled and tapped a hole in the opposite side and glued in a screw. I chucked the screw and knife blank into my drill, which was champed down, and turned it slowly, so I could sand and polish it while it spun.
The handle is not so pretty, but it works.And now for another teaser...