Yes you can make your own earring posts. This article shares the procedure on how to make earring posts by hand by Charles Lewton-Brain.
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How to Make Earring Posts by Hand - Ganoksin Jewelry Making Community
Step-by-Step Tutorials - Ganoksin Jewelry Making Community
How to Make Earring Posts by Hand - Ganoksin Jewelry Making Community
The Ganoksin Project (@ganoksin_project) • Instagram photos and videos