Panzerfaust removal of rust, without damage of paint

[duv]

hallo
I need advice how to clean this panzerfaust tube, from other side is more rusty (like end of pipe on this side) I would like to clean rust because it is there
should I use some acid?
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[heinrich66]

Oxalic acid (Oxalsäure) would be good imo.

[duv]

what would be the acid concentration, how to prepare bath for this tube

[duv]

I used 1kg of Oxalic acid for 18l of water, 6 ours, I will post pictures soon, great effect, stencils, stamps, decal (sicher, entsichert) visible now.
meybe decals on helmets are more durable, stencils on tubes (sicher, entsichert) , and luminescent paint on sight cannot be in acid to long

to neutralize acid after cleaning I used water (Karcher) low pressure (inside of pipe high pressure), soap, and dish-washing liquid

after that dryed and apply wd40

what are other methods of neutralising this acid??

[keifer kahn]

The rust looks inert.

Put the tube in a 50% humidity environment and dont touch it.

Even active rust wont continue if you do this.

[duv]

thank You Keifer
Photos shows tube before cleaning, now it is cleaned (I have to make picture).
Will humidity environment neutralize this that left after acid?

[keifer kahn]

Hi ,

Basically rust needs 65% humidity to start.

Maintain 50% and rust simply cant happen.

Buy a hygrometer(humidity gauge) and contol the environment(Usually through a dehumidifier) and i can assure you , you wont have problems.

[duv]

thanks a lot!!!!!!!!!!!!

[duv]

results and more photos
http://dev.wehrmacht-awards.com/foru...d.php?t=666960