Instruct: Classify Amazon reviews into positive or negative sentiment
Query: poorly designed electrical contacts

I used to love this kettle. I've had this kettle for over four years now and it has developed the same problem as some of the people who gave it one-star reviews. The electrical contacts have degraded over the past few months and today I couldn't get it to turn on at all no matter how many times I twisted it around on its base.I've cleaned the contacts twice in the past few months to no avail. Maybe an improvement for all of a day each time.Looking inside the base, I can see why the contacts die -- they don't grip the metal ring & spike at all, but rather the ring and spike just rest on loosely sprung metal. Wish I'd thought to inspect that before buying it.There's no excuse for such a bad design. Were they hoping for a repeat buy? Not going to happen!