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Cleaning Rusty EBMM Cobalt Flats

JEDI BASS

Supporting Member
Jan 26, 2008
11,735
9,061
Knoxville, TN
I don’t have the body chemistry that causes string corrosion. But, my favorite flats, the Cobalts, have been getting rusty on my main gig basses. I think it’s partly because they’re out in the humidity at outdoor shows.

Yesterday and today, I spent some time trying some WD-40 “Specialist” Rust Release on them, and the results were really good!

I was careful to try and keep the WD-40 on my rag, and not on the basses. And, I dried the strings thoroughly after with paper towels.
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Actually, you shouldn’t hope so. You don’t want petroleum residue left on the strings… I would use some isopropanol and clean them off. When you own a bass like that Pedulla you don’t cheap out, you buy new strings.
I was waiting for that, LOL. I have plenty of new sets. I just don’t waste money. I was raised poor and to fix things that can be fixed.
 
First, I'd have to ask how old were the strings to begin with? I think this is OK for short term but, in reality, a band aid approach. A better bet is to replace strings that look crappy. Especially if they have a bunch of play time. To each their own.
They’re not that old at all. It’s a common issue with Cobalts.
 
If I could make a recommendation, try placing some silicon packets in your bass case. Congrats on the WD-40 treatment on the strings, but keep in mind that moisture you are exposed to is also going to town on the electronics.
I don’t leave them cased up after the gigs, simply because I thought of the humidity issue already, and of course my house has AC. Honestly, it’s an issue with the Cobalts composition. They just seem extremely susceptible to humidity.
 
I was waiting for that, LOL. I have plenty of new sets. I just don’t waste money. I was raised poor and to fix things that can be fixed.

Frugal could backfire if it damages your fretboard. Whether you have a natural/unfinished board or the classic Pedulla epoxy, WD40 is a solvent. So…just be aware that trying to save a few bucks now could cost you later.