This technique is not likely to be required very often, and has limited application, but it is useful for Austramax owners. In this thread I pointed out that the branding on modern Chinese-made small Coleman bulge globes can be removed using dilute acid. Note: The branding is printed, not acid-, or mechanically-etched. Here is the technique: Printed branding. Batch number. Printed branding. 33% Hydrochloric Acid. Dampen a cotton cloth with the 33% HCl, and rub the printing, keeping it wet, until it is removed. If you can still see the “ghost” of the printing on the glass, use some slightly abrasive polish like Austosol to polish the glass to clear. Final result. Cheers Tony
A good technique, Tony! Certainly better than the "brute force and ignorance" way I've done it before, which was with cloth polishing wheel & brown polish cake. How did you discover that HCl does the trick?
Phil I can’t remember why I first tried it. I might have been pointed in that direction by someone, or by something I read. Cheers Tony @phaedrus42
A useful tip. The concentration of the HCl is quite high. Tesco won't be selling that. By the way, are any non-acid products that can remove the printing?
Toilet cleaner do the job for me but still leaves the ghost branding so ill be polishing mine after this post. Thanks Tony
It’s a valuable tip with acid @Tony Press , thank you! @Pancholoco1911 Does this cleaner contain phosphorus acid? I too don’t have HCl at hand at the moment, would be good to find something I could find on normal marketplace. Phosphorous acid is available here in Sweden so maybe that would be an option.
A lot of toilet bowl cleaners, i.e.; Harpic, etc contain hydrochloric acid. Not anywhere near 33% of course. I can get HCl at approximately 30+ percent concentration from the local hardware shops in my area. They are use as industrial, mosaic floor cleaners. No brands, no instructions, no contact tracings and only a warning/caution sign of Danger: corrosive on the label.
Any building supply chain should offer a removing agent of cement /mortar/concrete traces, or hazes, on glazed tiles etc. Usually (based on) HCL as it is cheap and effective. Acid from a car battery (sulphuric acid) should work likewise. And, acetone, an old and known paintstripper might work too on certain inks, so try the lady's nail polish remover?
With burned-in splashes (beer ^^) I would be almost desperate. A little penetrating oil and steel wool 000 was the solution. As long as no other dirt gets on the spot, it won't leave scratches. Best regards
