Indeed the sander is well made but its biggest flaw is to eject abrasive discs very quickly so quickly that one has no time to wear them. I tried Bosch drives and high abrasive Norton brand no avail. I bought a new shelf for 17 to machine (leroy merlin) no better and finally with unbranded discs made in China we arrive to sand but the disks end up not grip the tray while it is not damaged abrasive side? ? ?