I didn't realize that Mc Master's sold to individuals. That is awesome. If I call and order something from them it is always here the next day before 2 in the afternoon. Ordering online takes a couple of days more. I have an account w/ them and get a paper catalog once a year. It is about 3500 pages. Looks just like the website. Every year I have friends begging me for my old one. I will recommend more people to them now. And yes, carbide burrs break when you rattle them too hard against the material you are grinding. They are brittle. Don't use them in a cheap diegrinder that has alot of runout in the collet, cause you will break it in a hurry. I personally have had more of the solid carbide burrs break. The brazed ones have a stronger shaft. I always get 2 or more of the solid type because they break more frequently.
my signature lines...not really directed at anyone in particular..
BE different....ACT normal.
No one is completely useless..They can always be used as a bad example