Ash, be very, very, very careful if using caustic soda to remove anodising!
Don't know what's in that stuff but it's mighty powerful. Use a strong plastic or metal container and do it outside, I don't want to know what's in the fumes it produces (and the solution gets hot)!
Also don't leave the parts in for too long, would recommend dipping them using pliers and keeping an eye on the progress.
DO NOT immerse them in the solution and leave them their!
Was recommended to do this to remove the green from Axial AX-10 parts and have now had to order a complete set of linkages etc!
If left alone for a while caustic soda will remove the anodising and then starts on the aluminium itself!
Linkages became shorter, holes bigger and M3 became M3.5! Great!
It works very well but just be cautious and careful!
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