Looks good, but I have a couple observations, as I am in the first stages of laying one out.
1) Seems to me that the connection from the treadle to the hammer arm should connect to both both sides of the pivot to eliminate any one sidded stresses.
2) Shouldn't the hammer arm have some flex to it?
Like I said. Just observations. So far I have 2 different springs for the return, a complete spring pack from a 3/4 ton cheby, a several lengths of I beam, C chanel, and 4" square.
Now all I need is the time.
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