I have some old metal parts with corrosion. They are off of an old 53 year old Fender amp (corners and chassis straps and such). Some of it is pitted so I don't hold much hope for that. It seemed the rusty screws come out very nicely, it even gets the rust out of the Philip heads.
How long should I leave something in there? Can I get grittier media to really grind the rust away?
October 04, 2020, 09:14 AM
Haveme1or2
Some tumblers aren't made for course media. May grind a hole in the drum.
October 04, 2020, 09:20 AM
braillediver
People on the Knife Forums were "Stone Washing" parts in a water bottle with small river rocks put in the center of a rolled up sleeping bag cycled in a dryer.
The butcher with the sharpest knife has the warmest heart.
October 04, 2020, 09:32 AM
sigmonkey
Evaporust would be perfect for that.
It will remove the rust without taking good iron. (by chelation)
It may leave chromed parts with splotchy areas. If so, you could tumble those in the media used for brass for about the same time and it would be less time in the tumbler.
"the meaning of life, is to give life meaning" ✡ Ani Yehudi אני יהודי Le'olam lo shuv לעולם לא שוב!
October 04, 2020, 10:08 AM
SigJacket
quote:
Originally posted by sigmonkey: Evaporust would be perfect for that.
It will remove the rust without taking good iron. (by chelation)
It may leave chromed parts with splotchy areas. If so, you could tumble those in the media used for brass for about the same time and it would be less time in the tumbler.
Yep, had good luck with Evaporust from car bits to tools. Also removed bluing. Great to remove your corrosion, you could then tumble for surface effect, like the river rock suggestion. If it comes out like I think... maybe matte clear coat after.
-- I always prefer reality when I can figure out what it is.