Glass scalloping. Not sure how often this is done anymore; scalloped edge glass is out of style.
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Previously:
https://www.homemadetools.net/forum/...680#post136618
https://www.homemadetools.net/forum/...326#post135142
https://www.homemadetools.net/forum/...137#post120893
https://www.homemadetools.net/forum/...626#post132735
https://www.homemadetools.net/forum/...941#post124932
https://www.homemadetools.net/forum/...978#post120102
https://www.homemadetools.net/forum/...427#post122254
https://www.homemadetools.net/forum/...692#post102204
https://www.homemadetools.net/forum/...573#post110975