What kind of wood was that? I had a similar experience with eucalyptus here in Ecuador. Instead of drilling into it, was more burning a hole into the stem. As doing so with a shitty quality drilling bit, I pushed a little too hard and the bit slipped backwards. I thought I had finally made progress, but the bit had just gotten loose and somehow made it's way into the machine to glue to it. Took a loot of WD40, time and effort to get that thing out of there.
Needless to say, the wood here is often better quality than the tools.