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You can rig a mechanical fuse.

We had a shear bolt on our Massey hay baler (bolt that goes through both the coupler and shaft, no keyway, and the coupler was a greased fit 😂) - seems it would always shear if you got in too much of a hurry trying to beat the incoming weather, resetting time back to what it would have taken just going slow and steady, it seems.

Nonetheless, we kept a box of shear bolts around, lol, because weekend farmers don't get to pick their days to bale hay.
 
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