I strip the ALUMINUM fittings and buff them.... But not the cad plated steel versions used on PTFE or A/C hose. Those I just buff up.
To strip the aluminum fittings I dunk them in CRYSTAL DRANO....(sold at Lowes and Home Depot for about $3 a can) added to water in a smallish plastic bucket... I hang one at a time on a bent piece of welding rod... and then dip in clear water bucket to neutralize. Clean 'em off - dry 'em off and buff till you can see the food stuck between your teeth.
WARNING: The crystal drano has a wicked gassing off - DO NOT GET YOUR FACE ANYWHERE NEAR THIS STUFF.... I put the smallish bucket OUTSIDE on concrete wall -- use a 3' piece of welding rod -- and keep my distance and use latex rubber gloves...
When you get the mixture of Crystal drano and water "right" -- the fittings will actually BOIL... trust me -- these bad boys are stripped in SECONDS not minutes or hours or days.... This is a dunk - swish - check - another quicky dunk - and into the rinse bath. I use a clear plastic bucket so I can SEE the boiling action and see the anodizing coming off. Leave this in too long and you'll ruin the fitting.
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