Re: Using a Froe
Jim Crammond in Monroe, Mi
>Adam and other Riving Challenged Centrailians,
First, I agree wholeheartedly with Christopher about Drew Langsner's book "The Chairmaker's Workshop". It contains a wealth of information and, by far, it does the best job of explaining woodworking techniques of any book I've read.
Second, I don't consider myself an expert because I haven't done much riving, but here is my experience. The first step is to split your log into halves then quarters using wedges and a sledgehammer. Straight grained woods such as oak, ash and hickory split the best, cherry and maple split ok but are not as predictable. Riving a 30" log is also easier than splitting a 60" log. When you have the log quartered, determine the size of the pieces that you would like to rive. Draw lines on one of the ends roughly corresponding to the size of pieces you want remembering that you must always split the piece in half to keep the split running reasonably straight.
Now the riving starts. Score a line along one of the centerlines you have drawn using an ax and a mallet. The froe is not sharp, so an ax is used to start the split, especially on larger pieces. With the froe handle in your left hand(if you are right handed) place the blade of the froe in the mark you scored keeping the handle far enough away from the log so your fingers clear the log if the piece splits of in one whack. Hit the blade of the froe with the mallet until the piece starts to split off. The split tends to run towards the thinner side of the piece which you can control somewhat by turning the log. I.e, you always pull the handle of the froe to you, if the split is running towards you, turn the piece so the thicker side is towards you and use your right hand to pull the handle of the froe towards yourself.
There is a considerable amount of waste riving wood, but it is a fast way to rough out stock and you are able to take advantage of the maximum strength of the wood because there is no grain runout.
Jim Crammond