What is the current thinking on contact cleaning? Best product and process?

[Kingrex]

It was like this: https://diamondgroove.com/RCA-Cleaning-Tool--AASIGTOOLN

I would not use this. Anything abrasive is going to create micro grooves and ridges. And then you have metal dust/grit loose in the hole unless you somehow clean it out.

Even the 2000 grit paper I use needs a 3500 grit polish to follow it. After polishing I wash the parts in hot water, dry them with a cloth, then start wiping with deoxit immediately. Im amazed how much wiping with deoxit it takes to.get all the polish out of wherever its embedded. At least 4 passes of cleaning.

 

[Kingrex]

These will fit:

https://www.amazon.com/gp/product/B0752Z2T5P/

Thanks. I just put them in my cart. Now, what fits in a driver and signal tube socket.
I tried cotton twirled around a toothpick for driver tube holes. That failed. The cotton came off. Then I had to bend the end of a needle to make a barb and pull it out. PiTA.

 

[Tuckers]

what fits in a driver and signal tube socket.

There did used to be a purpose made cleaner tool for tube sockets. Don't remember what it was called.

 

[Lee]

There did used to be a purpose made cleaner tool for tube sockets. Don't remember what it was called.

DeoxIT® Gold Vacuum Tube Kit, #SK-GxMD - CAIG

DeoxIT® Gold Vacuum Tube KitIncludes:DeoxIT® D25L-25C, 25 mL bottle,DeoxIT® Gold GXMD-2DB, Brush Applicator,B-SS116, stainless steel precision cleaning brush, 1/16" dia., 4" overall length, loop end,Lint-free swabs, brushes, cloths,Display box, (8.0 x 5.0 x 1.5")If purchased separately =...

caig.com

 

[Kingrex]

That Caig clean kits look like they might work on a RCA or KT88 and larger. Not a 6922 or 6SN7.