I've been cutting Ostrich & Emu Eggshells. Tried Everything.
First pencil where you want cut. Use a COPING saw to gently make a shallow cut in egg all around. Then, go around again, going deeper with each round until egg is cut in half. Will be a little rough, Put med. grit sandpaper flat and rub shell half over it 'til smooth. Trim will cover -up flaws.

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