[Newbie] Are these end mills junk or can they be reground?

The thing about end mills is that the shank is about as accurate a round thing you can get short of a proper gauge pin. Busted cutters, especially if of carbide, are a great source of what would be quite expensive material. Joe Pieczynski on YouTube shows using them cut to make precision pins for his angle gauges, and indexing tool for setting up stuff in chucks.

I think you can grind them yourself, and there are bound to be videos on how, but the folk here are right. You can get good cutter deals from BangGood, or Amazon, or eBay, or McMaster-Carr, or Shars - whatever. Do not throw away the quality material!

I say that! Is it a bit sad that I would then deliberately thinking up projects that could use such stuff? :)
 
The ends are trashed but sides are fine.

You will do a lot of edge milling so use them there.

We cut bar stock in band saw a bit long as it is not perfect.

Place in mill and make end perfect via edge milling.

Need precise length, same thing.

Got nasty crusty metal, use these to get scale off.



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