I have used a plug cutter just about 1/8" -1/4" deep, pry out the little piece of wood then use a pliers to remove the piece of nail.

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Likely several ways to do it. I will use a nail set to push the broken piece out a little then remove with horseshoe cutters.

Something else you might consider when working with reclaimed wood is a metal detector. I purchased an inexpensive wand style metal detector to make sure I have removed all the nails and screws from reclaimed wood before I run it through any power equipment. It has paid for itself several times over.

 

I have one of these - https://www.amazon.com/Crescent-56-...N7SD/ref=sr_1_1?ie=UTF8&qid=1501094833&sr=8-1&keywords=slide+hammer+nail+puller


You beat the pincers into the wood with the sliding hammer sleeve, and they grab the nail for extraction.




While looking for a link for that tool, I stumbled on this. I don't know anything about it, but it sure sounds cool.


https://www.amazon.com/Air-locker-p...QM3G/ref=sr_1_2?ie=UTF8&qid=1501094833&sr=8-2&keywords=slide+hammer+nail+puller

 

If it were me I would pitch the boards with metal in them or cut that area out. It's not worth risking tearing up your equipment.

 

I have one of those. I didn't know they were still made. Mine is 100+ years old.

 

I diassemble mine with a sawsall then flip, use a nail punch to push nail heads back through and smiply pull with a hammer. All the collected nail heads are collectedand used for esthetic purposes on future pieces.