The collet broke on my router today. I was shocked when I saw the price of replacements (Bosch) online. Fortunately it's only a weeks old, so it's off for repair/replacement.
Any ideas whether I could have caused it? I wonder whether it was too loose. The bit worked loose just before dropping out completely, but it's hard to tell whether it was broken before it worked loose. My previous bit was stuck on very tight, I had to hammer it off and it left a tiny bit of metal missing from my bit!