I Cut an Electric Toothbrush in half to see what's inside and what makes a Phillips Sonic toothbrush work. I've always been amazed at these Phillips Sonic toothbrushes and ever since I started using them I never went back, I've wanted to see what makes these toothbrushes work so well and once we look inside the idea is actually pretty simple. Let me know what else you want to see cut in half with the water jet. | Warped