Roxul Sound Proofing Insulation + Drywall ( Test 2 ) / Shapeoko 3 XL SoundProof Box (Test2)
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Test #1: https://youtu.be/Uiz0mp9yn-M -- insulation only
Test #2: https://youtu.be/LKEAtJ_WdN8 -- insulation + 1 layer drywall
Test #3: https://youtu.be/IhCdL3bgkDI -- insulation + 2 layers of drywall (with greenglue inbetween)
Test #4: Coming soon... more or less... need to play around with my cnc router now :)
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So0o0o, moral of the story... mechanical devices create a good portion of their noise due to vibrations... and drywall does almost nothing against vibrations...
However, greengue is supposed to work by creating a layer inbetween of which inhibits vibration transfer.
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ambient room 30db
deamau5 strobe 5min 50db =) 30-32db
vacuum 65db =) 40-45db
router 50db-55db -- 57 with felt =) 40db
35db with felt - 33db above.
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first test -- no drywall: https://www.youtube.com/watch?v=Uiz0mp9yn-M