I left my .357 cases tumbling in the tumbler for about 3 hours. I don't usually leave them this long....anything to be concerned about?

Ramses II

I suppose it might if you have a very aggressive polish, but I've polished brass overnight many times. No harm done.

Bye
Jack

If you used corncob or walnut, no problem. Lots of people tumble overnite, with no problem. I usually set my timer for 45-60 min.

If you used some sort of abrasive media, maybe.

No way, I forgot I left mine on one time and it ran for about 12 or so hours overnight. The brass was nice and shiny...

Three hours in the tumbler is what I give my range pickups to give them an initial polish. Usually comes out looking very much like factory. Can get by with less tumbling time once the brass has completed the initial polish. No ill effects on either the tumbler or the media. Would hesitate to tumble overnight as the brass will come out gleaming and all I want is clean.

I've tumbled mine mine for three DAYS without problems! Other things came up and it took me a while to get around to the brass. They were sure purty...

Yeah, I've often left brass in the tumbler for 6 hours or more and never worried about it. A little extra time is required to get the grunge out of the inside of the case and the primer pocket.

Shoot them till they split. Your OK.

I normally run my .38 & .357 cases in a Dillon Magnum FL-2000 for 8 hours at a stretch. It doesn't hurt a thing, and they come out looking better than new. I use ground corn cob with Dillon Rapid Polish. Bill T.

I almost always tumble my cases overnight. I have on several occasions over the years left them running for several days and have never had any ill results. Don't worry.

I never leave the tumbler running overnight but will turn it off then resume tumbling in the morning. I don't really think you can tumble your cases too long, at least I've never heard of it. Best wishes.

Cal - Montreal

i always tumble my brass over night to get em shiney.... i use just cob media in the tumbler with no polishes...... always got to be sure the flash holes are open so i usually tumble brass before i deprime.... like they said shoot em till they start to split at the mouth you'l be alright...




life is short............. jjb

If you want control, the timers sold to turn your house lights on and off when you go on vacation will work fine with the tumbler. Get a cheap electromechanical kind, and not an all-electronc type. The mechanical switches will handle the inductive load more reliably than some of the solid state switches. Choose how long you want the tumbler to run, then start it up and walk away. If you live in a humid area, just don’t let it sit for weeks afterward before separating the media. Eventually moisture will swell the media enough to make it stick in cases or will keep the water against the brass where it can contribute to corrosion.

Nick

I usually set a start stop timer (simple appliance with a dial and pointers for start and stop times.) for 4-5 hrs when I'm gone to work. Don't have to listen to the rattle and they get clean.

Nickled cases clean a lot faster and its possible to polish some of the plating off.

Only one problem. They'll be shiney so don't look at them in direct sunlight.