A reel of robust (24 S.W.G. or 0.022" diameter) nickel chrome wire as recommended in The Complete Pyrography book by Stephen Poole. This will produce general lines and detail. The very tip can be sharpened if required for finer detail or hammered flat to burn fine lines such as feather, fur. grass effects etc.
You must be over 18 years old to purchase any chisel or sharp blade of any kind on this website