It's your teeth but I'd drill it. Never seen a steerer snap, carbon is strong and steerers have the chunkiest walls on a bike.
But then I won't need the fancy BMC stem that arrived today and if I go down the special headset route, I may be able to internalise the rear brake hose too. Depends whether the gap is large enough for a hose I guess
@PhilDAS started
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It's your teeth but I'd drill it. Never seen a steerer snap, carbon is strong and steerers have the chunkiest walls on a bike.