So ..I was happily drilling away on these Keshi /cornflake whatever you call them ...ready to crank out another pair of studs. Then I stopped paying attention for a second when the dogs ran in ..zip...straight through. A nice hole right through the centre. So I tossed them aside for a week or so ..most annoyed with myself ..when the lightbulb went off. These little starfish studs ..nipped some of the end off ...glued them in ! Another pair of earrings for me ! ( I keep all the failures and experiments for myself ! )