Instruct: Classify the given Amazon review into positive or negative sentiment.
Query: Quality?

Add me to the chorus of people who had the speed control burn out. I had my last cordless Dremel for 10 years. It wasn't the most powerful beast, but I use it mostly for pet claws, so that was okay. When it died, I bought this one. It worked fine at first. Kind of big and bulky, bit it did the job. After a few months of light use on the dog, I tried it on an actual project, with actual...wood. The speed control went south, and the thing has two speeds now, full speed, or off. It's useless for the dog now, or much of anything else for that matter.