I just bought some Sulfuric Powder and i want to know how to clean my coins with the Sulfuric Poweder.?
478509
Powder + Water + Rag = Clean Coins
452626
The answer seems to be to mix the gold with silver and wrap it in aluminum foil, thus eliminating the possibility of contamination.\n\nSee: http://www.gold.org/jewellery/technology/assay/
315655
Get a can of stripeze....careful when using tho...highly flammable. follow instructions and do it outdoors. DONT bead or sand blast them! If you do you will never get the polished look back! Rinse them good. Get some simichrome polish or other type of polishing compound. Be ready to use some elbow grease...you might want to buy a buffing disk for your electric drill.
191941
I use Goo Gone and then just take a scraper and scrape it off.  Add some rubbing alcohol if that fails.
871001
Use a mild hand or dish soap. Just make sure you rinse them very well, to get rid of any soar residue. Also it is better to let them drip dry, if you use a towel you will end up with fuzzes all over them.
74283
Most liquids. Try putting a coin in a packet of Taco Bell Hot sauce. It will eat the tarnish and eventually the finish. I recommend trying it wish a penny.
869473
Take it to a coin dealer. (Yes, I know it's a bill...but they deal in that stuff, too.)
98005
put a little bit of water in it and wait for few minutes, then you use very soft sponge with soap to clean.
413812
Vinegar is sour wine. Acidity of less than 5% by volume. Cleans copper or bronze by removing the patina and exposing the bare metal. The best cleaner for pennies is a quick dip into Ammonia. Dry quickly. and repeat until the desired shine is found.
444274
you can use white vinegar or wet baking soda.\n\njust put enough vinegar or wet baking soda on the soiled area and let stand for a couple of seconds. it works for me.
726054
Hydrogen peroxide can oxidize copper metal on the surface of the penny by displacing it as copper(II) ions.  See link for detail explanation.
554003
You can remove the tarnish with baking soda, metalic aluminum, and water. The aluminum combines with the sulphur compounds in tarnish (silver sulfide) to form aluminum sulfide, leaving the silver clean. \n\nSilver polishes buff the tarnish off of the silver, leaving a thinner layer on the object. This method keeps the original silver in place.\n\nhttp://scifun.chem.wisc.edu/HOMEEXPTS/TARNISH.html
95676
Use Toothpaste. Seriously, no joke, toothpaste works.
903862
Sorry Voyager. Copper is not so reactive a metal that it will react with sulphuric acid.\nYou need either solid copper (II) carbonate or solid copper (II) oxide for the salt.\nSince it is a sulphate, sulphuric acid is used together with the solid.\nHeat the acid so that the reaction can proceed at a faster rate. Add solid till no more will react (no bubbles of gas produced, and the solid remains insoluble). This is to ensure that all the acid is used up. Filter to remove unreacted solid and heat the filtrate, which is the copper (II) sulphate solution, till saturated (approximately 1/3 to half the original volume left would be a good gauge). Let the hot saturated copper (II) sulphate solution cool and after some days, when the excess water evaporates off, you should get hydrated copper (II) sulphate crystals.\nDo not heat till dryness as this will evaporate off the water of crystallization needed for the blue copper (II) sulphate crystals to form. Without the water of crystallization, you would get anhydrous copper (II) sulphate powder (white) and not the blue crystals.\n\nHope this helps :)
836703
Firstly, if you have a Zippo, once a month you must clean it.\n\nTo Clean:\n1. Pull out the container from holder.\n2. Unscrew the bottom screw, carefully and take out the flint (this is to be done everytime you want to replace flint).\n3. Take out "cotton" orderly as to ease when putting it back in.\n4. Take out the wick and cut the burnt ones (you only need to replace it when it is very short).\n5. Clean the burned areas with cotton and zippo fluid (do not use fire)\n6. Put clean wick back in.\n7. Put cotton back in\n8. Put flint in and screw fast the screw.\n9. Refill zippo fluid\n10. Put container back in to holder.\n11. Before use, clean you hands and dry zippo holder.\n12. Light up
348776
Buy a metal polish, and use it to remove the rust.
314012
Use Acetone\n\n Nail Polish Remover