I like to burn a spiral pattern on my blackpowder ramrods. I also do this with my axes. I use a propane torch. I also have used a small pencil thin butane torch to work a pattern in. I have heard of cordage soaked in kerosene and lit after being wrapped around the handle. Don't know about that one. Seems uncontrolled to me. Better do it outside. I like the heated hasp idea. I have made patterns on a hawk handle with a wood burning electric tool. The hasp would be more uniform if you can match the patterns between heatings. I just finished an army axe painted green. Took paint off, spiral burn, dyed with dark brown leather dye, tacked with small brass tacks around base of handle, patina on blade with mustard then two different cold blue solutions. I like it. Need to learn to post pics. Regards, Loosearrow