I have never tried using store-bought materials (other than the cordage) but I did practice in the beginning (as I know many others have also) by using a variable-speed power drill in place of a bow. This technique has been written up many times and is somewhat helpful both when youre first learning (and doubting whether it is really even possible) and when testing out different types of wood and different levels of dampness. One thing the power drill has taught me is that it is possible to get a coal with a ton of different types of wood and even with wet wood. It's just a heck of a lot harder with some woods than with others.

Oh and BTW... my buddy at the work no longer maintains that it is impossible to start a fire by "rubbing two sticks together" and that it only happens in the movies. <img src="/images/graemlins/grin.gif" alt="" />

As for me and my own learning... I am still trying to get a usable coal from a hand drill (with no cordage for thumb loops). No luck yet but I keep trying.........
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Learn to improvise everything.