Accusize Industrial Tools 3/8インチ 8ピース Hss ツールビットセット 回したり向かい合ったりするためのプレグランド 2662-2003

I primarily got these hss bits because I liked the assortment provided and the fact that they came with a case to keep them organized. On inspection, they appear to be a decent quality for the price; they're sharp and the grind looks to be OK by my eyes. I tested them on some aluminum round and brass hex stock and the cuts were good quality and chip control was good too. I haven't done harder metal, but for the softer metals and plastics, I anticipate these will be fine. I don't really have any long term usage to report but preliminary impression is good; I don't know what the alloy composition is, so that could affect the edge life and how they perform in harder metal, but so far so good.

Had to put on a small radius on the cutting tip to get a nice finish, the cutting edge is grind had to much of a point.

The bits are just fine, I dont turn alot of steel mostly brass and these work fine for it, the case is worth the money my bits were a nightmare all over the place now theyre centrally organized which is great..

I thought I was being stupid to spend this much on preground tools. I was wrong. They are much nicer than I had imagined. I won't be testing them on Monel, but mild steels cut with a fine finish. Cast iron is a little more wear than I like to see on tool steels, still very acceptable for small lots.

I use these with My small Craftsman lathe. The steel seems good and the edge that it was shipped with was good enough to face a cast iron backing plate for my 3-jaw chuck. Will order again when I grind them down too far. That should be a long time