i also own a whirly-jig. (you can go to their website and read my testimonial) after i sandblast a car on mine, i usually spin the car as fast as i can back and forth for 10 or 15 min.to get the sand out. i would be afraid to do that with some of the cheaper ones.but i bought mine for the long haul.i'll be using it for the next 20 years.