I have hardly use this little puppy . I nick the belt very slightly sand a piece of aluminum , replace the belt and it will not track properly or adjust now . I 'll update this when I have call Bosch , but I have have other problem recently with a 1375a grinder , and Bosch be not very helpful . overall this should be a great sander accord to design and spec , but it seem so delicate as to be entirely unsuitable for anything other than a ornament . for now , I be not buy another Bosch tool and I be create lot of colorful language when I think about the company . Make sure you read the poor review about Bosch before you commit you hard earn dollar to this company , I do not think they be a very honest company with much integrity at this point .