Bottom blade broke after about 10 uses. No, I did not try to cut a fence. Called Wrox customer service (mis-nomer, should be non-service). First they told me they could send me a new blade, then they told me management would have to ok and they would call me back within 24 hours. They did not call back. So, I called again, they tried to sell me the blade for about $30.00 with shipping, when I asked about warranty, the person at Wrox customer non-service said Amazon would cover the warranty, since I bought from Amazon. This is BS. So, the hedgetrimmers are in the trash, I will never buy another Wrox product and I advise you to be very careful if you are considering buying this one.