@IvarS The burner and feed tube are brass. You can use dilute citric acid to get the dirt off - but be careful. Not too long! If you really want to polish it (it will only go black again with use) you could use a mild brass polish like Autosol. Avoid Polish with high concentration of ammonia. Tony
@IvarS If you want only to clean it for brazing, then use a wire brush or steel wool on the area to be brazed, followed by a wipe with HCl over the area to be brazed. It should look a clean brass colour with no residue. Tony
Thanks! Do not care that much about polish the burner (for sure it will be black again), just wondered weather it was ok to dip both fuel tank (without getting citric inside tank) and burner (after removing spindle, needle and jet). Had a really dirty silent burner 111T, now works fine! Any risk of getting citric acid water inside the tubes?
@IvarS If you do dip your burner in citric acid, rinse it thoroughly in clean water afterwards. It can then be gently heated to dry it out. You may then get some funny colours in the flame when you first light it. Cheers Tony
Just leave spindle, needle and jet on when you dip burner&tank into citric acid and no liquid will enter into burner.
Here are tools for IvarS's 111T burner brazing (small propane torch and Sievert 268 gasoline powered flame thrower): Burner pre-heating with Sievert flame thrower: Leak point silbrazed: Burner was a bit tilted during brazing so some silver wandered to the burner skirt. I filed most of it away but didn't want to file too deeply that burner skirt will stay un-filed. Hopefully IvarS will not be too angry about that. I need to test that burner works ok...
You might want to remove the needle, it might be steel. You don't want steel in the citric wash with the brass. Ken in NC
Thanks to @Afterburner and hopefully the black (111C) case and burner I sent was useful for you. I do not care about finish on my burner, as long as it works. Now I am curious and thinking about learning basic brazing my self (not using burners for learn/fail though). Guess you are right @snwcmpr - if I ever dip a burner in citric wash I will either remove the needle or seal it like @kerophile wrote.
Hi @IvarS You obviously did your homework in noticing what I said about a temporary seal of the jet of a regulated burner when working with citric acid or similar pickling solution. I use a few drops of molten candle wax to seal the jet, a good cork or similar to seal the burner inlet, and they are easily removed when the citric acid soak is finished. If you want to develop skills in brazing/silver soldering have a look at the links in this thread: https://classiccampstoves.com/threads/practicing-my-brazing.31095/#post-315542 Best Regards, Kerophile.
