It's always a challenge to drill the shells. I do it under water - it disperses the heat and keeps the dust down. Lots of shells have sharp edges - one time I let one go and it spun around with the drill bit and cut my finger. I didn't like that..... Needless to say, I have a new respect for bivalves.
Let me know if you ever write in one of these. You'll know it's mine because there is a label inside the back cover.
