Ultrasonic cleaning tips please

[The Lord Flashheart]

No photos handy but get an old coffee cafetiere and rig up a means up suspending it in the bath.

Put some ordinary water in the bath and your cleaning solution in the cafetiere with your cases stood up on their bases.

This is efficient in terms of solution use and also lets you visually check when the primer pockets are clean.

I find that once they are clean the rest of the brass is usually done.

[bradaz11]

https://www.aliexpress.com/item/DIY-too ... 36083.html

I have one like this, there's some different sizes, but this is about the size I have. other bits are;

fairy liquid
citric acid crystals off ebay £5
pins - https://www.1967spud.com/shop/stm-tumblers/pins/
and a media separator
magnet pickup tool probably

pins in tumbler, brass in, fill 3/4 with water, squirt of fairy liquid, 1/4 tsp of citric acid. run for 20 mins. drain, separate, rinse, dry
done

Hi - I normally clean 50 cases at a time. Will a 3KG machine be enough ?

I honestly don't know, but I wouldn't want one half the size of mine

[dirtbag]

Hi update.
Got a second hand Chicago Rock tumbler.

https://www.harborfreight.com/dual-drum ... 67632.html

My only question as I am rubbish with elec , is what step down transformer do I need ?

[bradaz11]

I bought one of these for just such an occasion

https://www.amazon.co.uk/45W-STEP-DOWN- ... N2JHW96DYB

[Pete]

After reading this thread, I ended up buying one of these:

https://www.ebay.co.uk/itm/5KG-ROTARY-T ... Sw2FxZ1fUZ

Will take 100-150+ cases easily, and came with a couple of bags of 3mm steel shot, two spare drive belts and two O rings for the lid seal.
Add a flat teaspoon of citric acid, a dollop of washer liquid (I found non-bio washing machine stuff works better that Fairy.....), a litre of warm water, speed no 4, set 60mins, and off you go.
The 3mm shot works fine and is easy to recover with a magnet wrapped in a bit of cloth. It leaves a ring around the base of the primer pocket, though, so 2mm would be better.

Pete