I know we have some machinists-types on the board, so I’ll offer this stuff up here for free in case it might be of use to any of you.
These are various test tools and inserts that I’ve collected over the past couple of years. I’ll make a few notes about what each is, but trust that you’ll do your own research and figure out how to use them. I won’t take any responsibility for scraping of any parts or material
Let’s start with ISO inserts. These are all new, partial packs of 1 to 4 pieces. Most are 4425/4415 grade, which is for turning steel
TR inserts: I’ll be impressed if any of you are using TR inserts, but you never know… These have a rail system that prevents any movement in the pocket and are great for applications with very high surface finish or dimensional requirements
Grooving/profiling inserts:
Face grooving tool with SL interface (new):
D-shape insert turning tool with C4 interface:
2” diameter, 90 degree shoulder mill setup with C6 machine interface to arbor adapter:
CAT50 to C6 adapter:
4” (I think) 331 slot cutter/face mill for round inserts:
Various Prime turning tools and inserts, both ‘A’ and ‘B’-type. Google this if you’re unfamiliar, but it’s multi-directional turning using a single tool
Collet sleeve
Thread mills:
Solid carbide drills:
These are various test tools and inserts that I’ve collected over the past couple of years. I’ll make a few notes about what each is, but trust that you’ll do your own research and figure out how to use them. I won’t take any responsibility for scraping of any parts or material

Let’s start with ISO inserts. These are all new, partial packs of 1 to 4 pieces. Most are 4425/4415 grade, which is for turning steel
TR inserts: I’ll be impressed if any of you are using TR inserts, but you never know… These have a rail system that prevents any movement in the pocket and are great for applications with very high surface finish or dimensional requirements
Grooving/profiling inserts:
Face grooving tool with SL interface (new):
D-shape insert turning tool with C4 interface:
2” diameter, 90 degree shoulder mill setup with C6 machine interface to arbor adapter:
CAT50 to C6 adapter:
4” (I think) 331 slot cutter/face mill for round inserts:
Various Prime turning tools and inserts, both ‘A’ and ‘B’-type. Google this if you’re unfamiliar, but it’s multi-directional turning using a single tool
Collet sleeve
Thread mills:
Solid carbide drills: