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  2. Granulation (jewellery) - Wikipedia

    en.wikipedia.org/wiki/Granulation_(jewellery)

    The mixture lowers the melting points of both granules and base, and causes the copper to diffuse into both at the point of contact, creating a strong metallic bond. The colloidal solder is painted onto the surface of the base, and the granules arranged on the wet solder using a fine brush, after which the piece is left to dry.

  3. Gold parting - Wikipedia

    en.wikipedia.org/wiki/Gold_parting

    In the morning, however, take out the gold and melt it again, hammer it, and put it into the furnace as before. After another day and night take it out again, mix a little red copper with it, melt as before, and put it back into the furnace. And when you have taken it out a third time, wash it and carefully dry it.

  4. The 2-Ingredient Bars I Make Every Christmas - AOL

    www.aol.com/2-ingredient-bars-every-christmas...

    Let cool completely in the pan, then cut into bars. Store in an airtight container for up to 3 days. ... Sprinkle up to 1/3 cup of chopped walnuts or pecans on top before baking for a bit of nutty ...

  5. Cupellation - Wikipedia

    en.wikipedia.org/wiki/Cupellation

    16th century cupellation furnaces (per Agricola). Cupellation is a refining process in metallurgy in which ores or alloyed metals are treated under very high temperatures and subjected to controlled operations to separate noble metals, like gold and silver, from base metals, like lead, copper, zinc, arsenic, antimony, or bismuth, present in the ore.

  6. Doré bar - Wikipedia

    en.wikipedia.org/wiki/Doré_bar

    The proportions of silver and gold can vary widely. Doré bars weigh as much as 25 kg. During the 19th century gold rushes, gold nuggets and dust were melted into crude gold bars mistakenly called "bullion" by miners. They were, more accurately, doré bars with higher contents of silver and other adulterants than the mints would accept.

  7. Ammonium bicarbonate - Wikipedia

    en.wikipedia.org/wiki/Ammonium_bicarbonate

    Compared to baking soda or potash, hartshorn has the advantage of producing more gas for the same amount of agent, and of not leaving any salty or soapy taste in the finished product, as it completely decomposes into water and gaseous products that evaporate during baking. It cannot be used for moist, bulky baked goods however, such as normal ...

  8. Baking powder - Wikipedia

    en.wikipedia.org/wiki/Baking_powder

    Baking powder is made up of a base, an acid, and a buffering material to prevent the acid and base from reacting before their intended use. [5] [6] Most commercially available baking powders are made up of sodium bicarbonate (NaHCO 3, also known as baking soda or bicarbonate of soda) and one or more acid salts.

  9. You Can Now Buy Gold Bars at Costco, But They Are Selling Out ...

    www.aol.com/now-buy-gold-bars-costco-154844912.html

    If you have a sudden need for gold bars — along with a 10-pound jar of peanut butter and 30 paper towel rolls — look no further. Costco has you covered.But act fast, as they are selling like ...