In operation 1 year. No problem. Convenient machine. With the sole without problems . the sanding sheets stick to the dead . then they peel off with the use of force)))). But it all depends on the quality of the sheets. If the quality is below average . the second time they stick not qualitatively . but this is not a problem of the machine itself . namely the quality of the consumable itself. I am satisfied with the purchase . I recommend.