This is my attempt to make a Bushcraft knife based on the Woodlore model. I used 4 mm 01 carbon Steel which I obtained from Cromwell . I drew the template of the knife and had it cut out of vinyl on a cutter plotter, this was then applied to the steel blank ready for cutting out using a hacksaw and good files.
Step 1: Knife Blank Shaping
To create the V Bevel I first had to mark out the centre of the blade along its edge this ensured the cutting edge was positioned centrally along the blade. I had to make jig to file against, this consisted of a metal strap to clamp onto the knife, the strap allowed me to accurately file the correct angle of the end of the bevel next to the handle. to file the bevel along the length of the blade I clamped the blade in a drill vice, then I used a bit of trigonometry to build a rest at the back of my bench for my extended file to run against, I then filed the bevel leaving approximately .5mm on the edge of the blade, this prevents the edge burning away during the heat treatment process. prior to heat treating the blade I drilled the holes required for the scales and the cord tube.
Step 2: Heat Treating The Blade
To heat treat the blade I used an Acetylene torch with a rosebud nozzle and heated the blade along the back edge to allow the heat to travel towards the blade edge, (do not apply heat directly towards the edge as it will get too hot, this will prevent you sharpening it as you will create a burr which will chip off leaving your blade rough) I heated the knife and kept checking for the critical temperature using a magnet. when it reaches critical temperature it stops being magnetic. when at the correct temperature I then quenched in pre heated oil until it had cooled. I only treated the blade of the knife as i didn’t want the handle to be too hard. I then Tempered the blade as per the instructions on the packet.