I am a little disappointed today. Earlier I noticed a small amount of dust coming from the bottom of my tumbler bowl. I emptied it and found a 1 inch long crack in the bottom. After removing the bowl for further examination I found two of the three mounting points are cracked halfway through the bolt holes. I know this was a low end piece but I expected more the a 18 month service life. I have and estimated 75 to 100 hours of operation on this machine.