Description of π§ Enhance Precision Machining with OSCARBIDE Multilayer Grooving Carbide Inserts
GTN-2(QC1402) Width: 0.079". Material: made of solid carbide with multilayer coated, offer long tool life and faster cutting speed, low friction coefficient, good wear resistance. For cut-off and grooving. For cutting all steel and stainless steels and non-ferrous materials. 5pcs With a plastic box for convenient storage.
4 of these bits broke about 1/3 inch from the cutting edge. There were no chips either, the material liked to roll over the drill bit. Bit geometry is said to be poor and I wasn't impressed with mostly pretty junk.
I'm an aspiring machinist and have been using my 9x19 for about 3 months now. I went through a box of these carbide inserts in about 2 months which I think is normal considering what I've learned. I like the 0.079 inch width. Very narrow compared to most other split width tools. It does a great job with aluminum but you just have to feed slowly and make sure it gets plenty of cutting fluid when cutting SS like 304, 316 and 17-4. I immediately ordered more. I think I'll stick with this insertβ¦