is not a premium car. the spindles and belt are perpendicular to the fixed base, but it is very difficult to position an actual working base, which can be tilted, perpendicular to the belt. The biggest problem is that the belt sanding plate isn't flat, it's curved in several directions, so it can never be truly perpendicular to the table. The finish on the table isn't the best, but it doesn't affect performance. Spindles are fairly well polished. The part that transfers torque from the motor to the spindle is made of thin plastic. it will not work. This can be designed so the motor/spindles don't fail first, but it's definitely not a reliable part. plan to replace it. relatively quiet (significantly quieter than my Makita 4" belt sander). Auto corner stop positions aren't accurate. I unscrewed a piece of metal that fits in the groove. Now use the compass to set the angle of the table. Should have probably gotten it Better quality spindle sander (no belt) with cast iron table The cast aluminum table on this sander isn't perfectly flat, but is adequate for most applications Small parts tend to vibrate outside of their mounting points, so plan on storing them elsewhere Machines aren't that bad, i thought it was inferior equivalent to WEN or Harbor Freight Quality For $100 more they could make this great machine (cast iron table, better quality belt pulley, improved table tilt function. Could if I was more picky I'd rate it a 2. For general grinding requirements, this machine is a three, for Detail or precision grinding - two.