Received a new Niagara carbide 1/2 x 1/2 x 1 x 3 end mill. I had bought a 1/4" Niagara and liked how it cut a lot, so I found this 1/2" one on eBay. Included in the box was also a tube labeled 3/8 x 3/8 x 1 x 2.5 carbide Niagara square end mill. I think they just threw it in my box, because the cutter didn't match the label on the tube. The end mill is only 2" long with a 1/2" LOC and it isn't carbide, just uncoated steel, marked Niagara. It doesn't even look quite "new". The tips aren't as sharp as I'd expect. No receipt, just was in the box. Not complaining, as it was free, but it is a little weird. I'll try it, but not expecting that much of it.
Can't find anything close to this stubby cutter in the Niagara Cutters catalog. Guessing it's cobalt. It is straight shank. If I add straight shank filter to the search, there are no hits. Markings are "Niagara 85526" and "3/8 USA L145". The shank has an odd flat on the shank opposite to the logo. The flat does not look like it came from the factory. (No factory would let it out the door.) The shank end also looks ground to a large chamfer. This looks like a modified and used customer end mill that was returned, possibly substituted for the real, more expensive carbide end mill. Supplier got stuck with it and sent it to a random person (me) just to get rid of it. Still think getting a used, modified end mill that I didn't order is a bit strange...
