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Meat Tenderizing Hammer

YYCHM

(Craig)
Premium Member
So, I've been commissioned by my daughter to make another one of these.......

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Ya, Ya, I know... grade 9 shop stuff. I made this one about 5 years ago on my mini-mill and utilathe. Will make a good excuse to fire up the shaper.

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Tapping the head 3/8-16.

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Here I'm experimenting on some aluminum to determine what a suitable down feed and side step would be. Looks like 0.1" down and a 0.15" side step will work nicely.

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My shaper has a ridiculously small dial for indicating table travel. And no witness mark to align it witho_O So I'm using my dial indicator to measure side step.

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One face of the head done. That there probably amounted to 2 hours of standing at the shaper down feeding. Not the quickest machining operation that's for sure.
 
Worked on the second face of the head today....

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Pretty bumpy trip going across this with the shaper, the tool geometry was all wrong.

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Started at 10am and finished the last row at 4pm:rolleyes:

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Not bad bad but not great either. I wonder if a wire wheel mounted on my angle grinder would spruce that up?

Tomorrow will make a handle and do some knurling.
 
Pretty bumpy trip going across this with the shaper,

You’re a better man than I, Gunga Din. I serrated the bottom of a door stop once at about half the depth of yours and was more than glad when it was over. I really didn’t like the hammering as the tool hit all the ridges on the way across.
 
You’re a better man than I, Gunga Din. I serrated the bottom of a door stop once at about half the depth of yours and was more than glad when it was over. I really didn’t like the hammering as the tool hit all the ridges on the way across.

I wasn't plowing out 0.1" per stroke. I had to down feed very slowly, something like 0.01" per stroke, that's why it took 6 hours to do (factor in a quick lunch and other breaks). 18 cuts at 10 strokes per cut. A better tool would have helped.
 
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More progress and DONE:p

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Knurling some 3/4" round for a handle.

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Tapping the handle 3/8-16.

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Threading some 3/8 rod 16 TPI on both ends.

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The pieces ready for assembly.

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And DONE. They weight in at approx. 1.25 lbs. each.
 
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What about using a 90 degree spot drill/mill on your mill and just ploughing through at full depth? I mean as alternative to the shaper. Nice job on the hammer. I like the knurling.
 
What about using a 90 degree spot drill/mill on your mill and just ploughing through at full depth? I mean as alternative to the shaper. Nice job on the hammer. I like the knurling.

Ya, I have to admit the mill was faster that's for sure. For the first one, I clamped the head on a 45 in the mill vise (and prayed it didn't move), then simply stepped over as far as I went for depth all the way across the face, 0.1 or something like that. Worked well, but the setup was sketchy.
 
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