It's been quite sometime since I reloaded anything. I'm starting to crank the old press up again. I have over 100 pieces of 7mm Mag brass tumbling as I type this. I keep seeing some are using dryer sheets when they tumble. Some say add car wash or car wax. My question is ............What is the purpose for the dryer sheets or the car wash /wax ? I'm using grounded Walnut shells and a little poishing compound. Mine is a Tumbler not a vibrating cleaner. I'd appreciate if someone will shed some light on this. I've used the walnut shells and the polishing compound for about 35 years and always was happy with the results. What have I been missing not using the dryer sheets or the car wash/wax? Do you put the sheet in whole or do you cut it in pieces?