Hi all,
Iuke12, I have tried it and it works, but i tell you I personally feel you get a better protected coal by doing the V notch and in the pics I am showing you will see why. I also believe and this is through practice that the notchless fire board is a more of a pain in the butt than just doing the bow drill with a V notch. I can use a regular 1/4" or so thick board for the hearth board and then cut in a divit and drill a burn hole and then cut the V out and spin up a coal in 1/ 16 of the time it takes to do the notchless one. I kid you not. And I can do it with soft or med to hard woods.
The notches can be done with hard woods. It is much easyer with the hearth being made of soft wood.
In this pic you can see that I have the 2 holes burned in, I am using a 3/4" thick piece of bass wood. i have my finger in the deeper hole, then I cut a canal inbetween them,
In this pic I spun up my coal and then did not even have to blow on it to see the coal the wind did that.
We are havind some gusty wind here in Ne. today. On a windy day the V notch is more portected than just the dust falling into a hole on your hearth board.
I used sycamore wood for the spindle and bass wood for the hearth. When you do this use soft wood for the hearth and then med to hard wood for the spindle then you can drill the holes out a lot easyer than with soft wood on soft wood. Well that is my opinion.
Anyways give it a shot and try it with several woods and see what you think.
Bryan