Fill a plastic container with a small amount of water, and set a shard of sea glass inside; it should be slightly covered but not submerged (drilling the shard in water will guard against cracking and prevent it from getting too hot).
Step 2
Wearing safety glasses and holding the shard with the eraser end of a pencil, make a hole in glass using a craft drill fitted with a No. 61 diamond bit (it may take a few tries to drill through completely).
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