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/vt/ - Virtual Youtubers

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>> No.64850088 [View]
File: 1.04 MB, 3307x2339, mohs.jpg [View same] [iqdb] [saucenao] [google]
64850088

>>64849935
Normal Biboo? Anything between 8 and 9 should do the trick but a 10 is optimal. Rock Biboo? You can't be hard enough.

>> No.63673116 [View]
File: 1.04 MB, 3307x2339, Mohs-Hardness-Scale.jpg [View same] [iqdb] [saucenao] [google]
63673116

Rock hard this, rock hard that, but how hard rock is hard rock constructions actually?

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