Description of Enhance Precision with OSCARBIDE Indexable Grooving Parting QA08R 20
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 use this tool on my lathe for grooving, but mainly for parting. Works perfectly. Will not bend or break like HSS cutting tools. But this one cannot go very deep.
Tool works great on my bench lathe. I needed something with an insert because I don't always have time to turn the edge on HSS. No chatter and the insert stays in place unlike others I've tried :)
I've tried OScarbid tools before, but the quality sucks. I ordered 5 extra bits and the first 3 fell out within minutes when milling on the part at very low feed and 70rpm on a lathe with full coolant. The carbides just explode. The first didn't even cut, it squeaked like a cat in a cauldron. The insert failed completely and tore the tool holder. The next two simply split in half, down the middle as shown in the pictures. I completed, sharpened and centered the parting with HSS China Parting…