Bought these 1/4" bits the other day. They are meant for use in cutout tools. I felt like $9 for 3 bits was worth the risk. I was cutting .15" per pass in which they seemed to work pretty well. Time and more testing will tell. Used with my 500 watt spindle setup, so I had a wide range of speed control. Try it out and let me know what you think.
That’s a great tip…at that price they’re tough to beat.