Just wanted to pass along my experience with this...I have read several posts on this on here, and wanted to share....I started out the old fashioned way....abrasive disks and flapper wheels. They, of course, will do a great job of removing both dross and mill scale....just takes forever, especially when you have a couple hundred small pieces to do.....I then decided there had to be an easier way...so after doing some reading on tumblers, I built one out of an old propane tank with a 4 wheeler winch motor and bike sprockets for the drive gears...worked great...if you let it run for hours and didn't mind the noise....both of them were a pain to me...finally did a little more digging, and found the posts about muriatic acid...mixed 1:1 in a large platic drum...I cut the pieces, take them straight off the table and throw them in the acid solution...most pieces, even with heavy dross (I get in wayyyy too much of a hurry moving different thicknesses of sheets on and off, and alot of time just let her eat) are done in a few hours...mill scale, dross...all gone...just avoid the fumes, and save yourself some time...and work!!!!
I know this is well known to alot of you...but there may be a few people who, like me, were beating themselves to death with grinders and wire wheels....just wanted to share
![Wink ;)](./images/smilies/icon_e_wink.gif)