it amaze I that people be give this tool more than a one or two star rating . it can not be use for over 2 hour without begining to fail . it show that most user be either not use the tool long enough before give a review , or the normal project people use the tool for be very short duration . this sander be size and shape perfectly for easy handling and general all position use . when the sander be new I use it to sand a maple butcher block top . after a hour or so the sander be spit black graphite piece all over the white wood top stain the surface . the sander be hop around like the wheel be square ! I remove the belt to inspect the sander . the friction pad be disintegrate . the wheel be clump with fragment from the die pad . I have to finish the job with my old $ 49.00 Skil which be very light duty , but finish the job . I send the sander in to be repair under warranty . I get some resistance from the repair people , but they do put a new pad on , and replace a wheel . I have since use the sander for very light use type job of short duration . last week I have another job which require continuous use for 3 hour sand a fiberglass body panel flat . I use no down pressure only gravity to weight the sander . it last 2 hour before spit out carbon flake again . the wheel be cake with graphite lump again and the lead 25 % of the pad be wear down again . this pad design be lack for any project require continuous use over a hour or so . it look like I may need a heavier duty tool to use for any surface type job . this one be only good for sand edge or small lump off of surface . the cost be too high for such a light duty tool . I hope they abandon the carbon pad for future offering . the plastic back bone inside the dust bag fail on my sander also . it have small ear that attach to the inlet socket . the ear be very small diameter and lack robustness . I hope Bosch can refine this sander , as it be a good handling tool and would fit the need of many a craftsman .