wavesum Karma 38 Created 13 years ago About Founder of Wavesum Recent Submissions 1. ▲ Protocycler recycles plastic bottles into 3D-printing material (sciencealert.com) 2 points · 10 years ago · 1 comment 2. ▲ Like a tablet but on your skin (cicret.com) 4 points · 11 years ago · 2 comments All submissions on HN · View profile on HN