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Two-piece chalk holder with engraved Planck's constant hbar.
Derived by https://www.thingiverse.com/thing:3378356 .
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1 Likes11 DownloadsDecember 5, 2022
1 Likes11 DownloadsDecember 5, 2022
Two-piece chalk holder with engraved Planck's constant hbar.
Derived by https://www.thingiverse.com/thing:3378356 .