HHIP 2000-0071 1/4 x 4 Inch HSS Extra Long Square Tool Bit (Pack of 1)

Good product

I used a 3/16" tool bit to make a broaching tool to cut keyways in gears. After over a dozen keyways the tool is as sharp as when I first ground it.

Purchased for metal turning. The metal quality was decent, ground easily, and held a decent edge. Used to to aluminum, and cold rolled steel.

I got this to make a wood-turning tool called a bedan. Last year I made one out of M2, and I wanted to try M35 to see if it would hold an edge longer. M35 is basically M2 which has cobalt added to improve the wear-resistance and red-hardness. The downside of wear-resistance, of course, is that it takes a lot longer to grind, but a bedan is a pretty simple tool to make, and the red-hardness means you can do most of the grinding on a bench grinder or other high-speed grinder without affecting the hardness. The thing I wasn't prepared for was that the blank had scratches on all four sides and the sides weren't perfectly flat, and, for mainly esthetic reasons, I give my tools all my tools' flat surfaces a high polish with a series of diamond sharpening stones. This has to be done by hand, and in this case it took forever.

works great and put out lots of sparks

Looks like a good piece but haven’t used it yet

A machinist I worked for many years taught me that you could use square HSS tool steel (ground) as parallels. Not so with this product. I realize that most people use it for cutting, but having it around for parallel is a plus.

Seam to bb a good value.