Description of OSCARBIDE Indexable Grooving Parting QA08R 20 Cutting Tools
Size:Shank Size (B x H): 1/2" x 1/2" Overall Length (L): 4.5". GTN-2 insert stop assures accuracy of center height and precise depth of cut. Simple set-up with one piece integral shank holder adapts easily to any machine type and turret configuration. Opening of wide grooves by plunging and side turning,wedge clamping of insert provides superior stability in close quarters face grooving cuts. For external parting & grooving, profile/copy turning.
I've wanted an insert parting tool for a long time but it's expensive. Then I saw this one and the price was right and it comes with 10 inserts. Cuts aluminium, brass and steel well.
I use this tool on my South Bend A model lathe and have no problem cutting aluminium, brass, titanium and steel. The max DOC size is just over .600 so it doesn't make it to 1.25 inch stock. Still a useful addition to the home store.
I was really excited to get this tool as I was tired of working with HSS cutting tools. On arrival it appeared to be a good, well designed tool. Used it for the first time yesterday. I cut 1018 steel. I used cutting fluid and light tool pressure and made a .002" diameter cut. The tool entered the workpiece about 0.060" with no vibration or other problems and suddenly broke just behind and below the carbide insert. I believe the steel making up the tool was too hard in this area and became…