Sam:
Is there a reason you're building a helve instead of adding a second arm and having a perpendicular head hammer?
Along with sensitivity to height there's the fact that top and bottom tooling never matches. You'll need spring tooling for any but the most basic processes.
The increase in complexity is almost nil but the improvement in efficiency is pronounced.
The simple mod, leaving all else the same is to extend the post a foot or so and mount your pillow blocks on the face rather the end. Add a second arm and attach the ram with pivots.
Everything else can remain the same.
Nice sketches regardless and a together design. I don't see an obvious failure issue.
Frosty
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