Concrete Passive Speaker Cube

In this video I'm building a passive concrete speaker for my phone to sound better. 
Products used for the project (Affiliate):

Plastic wine glasses - http://amzn.to/2nAPAKm
Polyurethane glue - http://amzn.to/2nAZtHH
Dewaxed Shellac - http://amzn.to/2nw8wZ5

First 50 viewers will get three meals off their Blue Apron order free! Click here: http://cook.ba/2lP1ZpD In this video I'm building a passive concrete speaker for my phone to sound better. This video is sponsored by Blue Apron.