I decided it was time to clean my Deadair mask. A lot of rounds through it, I'm thinking 1,500.
I pre treat with silicon oil for easier cleaning.
The end caps came off -no problem, threads are lubed with anti seize. Baffle stack was stuck-required a light tap with a polymer dowel.
1) Carbon Killer soak 15 min
2) Ultrasonic bath
Front baffle and it's mate are stuck together. BoreTech Carbon Cutter applied--pop in Ultrasonic bath and they separate.
3) Isolated lead deposits on the leading edge of the baffles, scraped off with bronze pick.
4) Tumble with SS pins for 12 hrs
Will treat with Silicon oil after tumble. Very pleased with pre tx Silicon--baffles were about 80% clean after steps 1 + 2.

That sounds like a lot of different methods and tools. We got soaking, ultra sound, scraping, tumble with pins and silicon oil pretreatment. Which is more or less all the methods I have heard of regularly. Surely you don't need all of them for an acceptable job?

Anxious to learn from this thread as I have two of the Dead Air Mask units and I do not have an Ultra Sonic cleaner.

I’m thinking some of that is a bit overkill, specifically the 12 HOURS of tumbling with stainless pins. I’d be thinking 2 hours MAX.

Did you check them part way into that to see if they were already clean?

12 hours of tumbling after an ultrasonic bath? For 1,500 rounds?

The Mask was definitely overdue for a cleaning. The baffle stack was stuck in the tube and required to be tapped out out with a dowel. The front baffle was fused to the 2nd baffle--no amount of force could separate these 2 baffles.
Carbon build up and lead deposits are the biggest problem with 22 caliber suppressors.
Carbon Killer soak was painless--15 minutes. The ultrasonic bath was quick--180 seconds and watching the little dust clouds from the carbon coming loose was painless. Brute force could NOT separate the front baffle from baffle #2. Carbon Cutter and the ultrasonic bath accomplished separation. Lead deposited in the areas of air flow thru the baffles-concentrating on the front plate and the mouse hole. The lead came off the front plate with a BRONZE pick--don't use a stainless dental pick. The tumbler was used to clean out the mouse hole and internal cervices--I just turned it on and let it run.