I've made this big two and a half inch chisel, for use when turning on my pole lathe. I previously had difficulties with using narrower tools, and found that the best tool I had for turning a long straight surface (such as a spurtle) was my axe, but the handle did not allow for great control. This chisel is my solution. Made from old Land rover leaf spring, with a turned sycamore handle, steel tube ferrule and a leather washer underneath the bolster.
Unfortunately I haven't been able to test in on the lathe yet, as I had to pack away the lathe to convert the garage into a metalwork shop.
Thanks for looking.