Morgan
International Hazard
Posts: 1694
Registered: 28-12-2010
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Mood: No Mood
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Titanium pen
When watching this video of Ben's, he described a method to remove titanium marks from a surface. In the past I noticed whenever I put an aluminum
cookie sheet or steel pot or pan in my white kitchen sink there were metal streak marks that were hard to remove but came off fairly easily with
Barkeeper's Friend which contains oxalic acid. I've used oxalic acid to make ferrous oxalate and pyrophoric iron but other than that nothing else.
So I've a lot of titanium tubing but not any grade 2 or pure titanium and was wondering if oxalic acid would remove pure titanium streaks. There was
some mention of the compound titanium oxalate on Google. I'm not sure about the titanium pen if the titanium is annealed or even pure Ti. If anyone
knows, how might oxalic acid work, would it be very effective or painstakingly difficult as a Ti streak remover?
How to choose a cleaning solution
https://www.youtube.com/watch?v=HiL6uPNlqRw#t=17m16s
Playing with Fire
http://www.playingwithfireglassworks.com/store.html
Tidbit
"I've posted on this subject several times... but maybe not here. Instead of paying like $20 for a titanium scribe do this. Go to your largest local
welding shop and get a titanium welding filler rod, 1/16". Cut it into 2" or 3" lengths and give or sell all but 2 to your friends. Now sharpen one
end of the little piece and then use veryfine sand/emery paper to polish a nice point on it. I doesn't have to be a needle point but should be finely
sharpened. Go to a stationary/drafting/office supply store and buy a mechanical pen like the Eagle Turquois Automatic #10that takes 1/16" leads. You
have a scribe for about $7.50. To use it you just wet the surface with a little spit and scribe your 'ID' . It will leave a very fine silvery line
that will not rub off and I am told will not burn off. The first ones I made I simply epoxied themetal point into an empty ballpoint pen handle...
that works also."
http://www.wetcanvas.com/forums/archive/index.php/t-281063.h...
[Edited on 13-10-2015 by Morgan]
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zed
International Hazard
Posts: 2283
Registered: 6-9-2008
Location: Great State of Jefferson, City of Portland
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Mood: Semi-repentant Sith Lord
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Metallic salts of Oxalic Acid, are often highly insoluble, and may be of useful colors.
A common use is in "Bleaching spots in Oak floors". Steel nails in Oak floors, over time, react with the Oak to produce unhygenic looking black
stains. Oxalic acid treatment, removes these ink-like stains, and produces a colorless (actually oak colored), highly insoluble, Iron Oxalate
residue. This, stays right where it is formed, but it happens to look nice.
As for Titanium streaks. Try it. Generally speaking, when Oxalic Acid, "grabs" on, to a metaliic ion, it stays grabbed.
[Edited on 4-11-2015 by zed]
[Edited on 4-11-2015 by zed]
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