so much i bought a second one but it had all the problems you see posted here so i took it back and now have only the one good one. i think the unbalnced chucks that made there way past any qaulity checks were the root of most problems. also the 3 in 1 oil in the chuck is asking for gumming up problems. i think the new chuck should fix any problems they had but realize that maYBE 1000 MACHINES HAD PROBLEMS OUT OF 30 TO 40 THOUSAND MACHINMES. IF YOUR MACHINE IS WORKING YOU DONT GET ON HERE AND COMPLAIN ABOUT IT.