I be go to buy a smaller 21x3 , but find this Makita for not a whole lot more . I could not resist - especially as I like Makita tool . on arrival , it appear that the unit I receive have already be use . that make I pretty mad but I decide to test it out before return it to Amazon . hey , it be already use so no big deal . well , I be not give it back now . the only down side be that this thing be heavy . one of my project involve remove a bunch of material from some wall . I do not know how long I can hold this heavy beast against a wall though . on the other hand , horizontal-ish surface be super easy because the unit 's weight mean all I have to do be keep control . you do not want this to be you only power sander though . it work fast , but that also mean it can cause a lot of damage in a hurry too . for example , a little slip and you have round a edge rather nicely . it would be very hard to round all the corner evenly though .