Review on SHINA Titanium Engraving Bit Set - 1.5mm to 3.175mm - ST1.5 to 3.175mm - Pack of 10Ti by Marcus Zimmerly

They seem to have gotten the job done and at a great price. I use them on my x-carve cnc for hobby detail engraving. I've only used it for woodwork and have completed several projects with it. The first time I used it, the smallest pieces broke off because I was a beginner and had no idea how to set the cutting parameters. Of course you have to cut very slowly, these small and detailed works take a lot of time from the machine. I've been carving the 1.51mm bit for several hours and it still seems sharp and works well. Will order again when the time comes.