jumpforjoy61
10-27-2007, 04:32 AM
this knowledge was gained over many many years
but not by me hehe http://etac-airbrush.com/phpBB/images/smiles/icon_lol.gif god i i love the old tinternet
green and white rouge think about it ! :lol:
11. Green rouge and white rouge are similar to jeweler's rouge
Nope! Sorry, no such thing as green or white rouge, I don't care what any one tells you.
Many manufacturers in the industry don't appreciate this, they call anything in a bar jeweler's rouge - but 'rouge' is French for 'red'. jeweler's rouge is red because it contains ferric oxide. If it doesn't contain ferric oxide, it's not rouge.
jeweler's rouge was developed not just because of how fine it can be, but also because it stains the gold and gives it a sunny glow. Green and white rouge, as many people call them, are abrasive compounds, which are in most cases way too coarse to be used on gold or anything else of value. If you offered them to a jeweler as rouge, he would laugh at you.
For a start a good quality jeweler's rouge is three times the price of any other compound. There are some abrasives which are as fine as jeweler's rouge and finer, but they don't behave like jeweler's rouge, and jeweler's rouge they are not!
Because of this generalisation I have seen very aggressive abrasive compounds being sold as products that were suitable for use on jewelery and precious metals. Not good!
Metal Polishing Myths, Half Truths and Lies
2. All metal polishes will protect
Well, polishing will normally protect any surface, to some degree. However, many metal polishes contain ammonia or what is termed anhydrous derivatives. These often appear in new and many old, trusted and established products, including household names.
In fact they are the industry standard, and have recently been proven to cause premature aging of many alloys, especially brass and other copper alloys. Minute cracks and fissures appear after excessive use of ammoniates or anhydrous products.
Also, these chemicals will increase the tarnishing of the piece in the long run, and cause the item to lose its lustre fairly quickly. This means that even in a perfect, stable environment the items will need repolishing. Therefore the manufacturers sell more product.
Polishing with the correct products will increase the life span of any piece if it is done properly, whereas the use of ammonia and anhydrous products has been proven to do the opposite. A few manufacturers use mild acids instead of ammoniates or anhydrous. The result being that the acids etch into the metals instead.
One of the main things that makes anhydrous chemicals so bad, is that they will dissolve Zinc, a major component of brass, and nearly always present on aluminum castings. Zinc is also often used to stop steel from corroding. Anhydrous chemicals can destroy these materials.
The manufacturers that use acids are no better than the others. They still damage your pieces
paul
but not by me hehe http://etac-airbrush.com/phpBB/images/smiles/icon_lol.gif god i i love the old tinternet
green and white rouge think about it ! :lol:
11. Green rouge and white rouge are similar to jeweler's rouge
Nope! Sorry, no such thing as green or white rouge, I don't care what any one tells you.
Many manufacturers in the industry don't appreciate this, they call anything in a bar jeweler's rouge - but 'rouge' is French for 'red'. jeweler's rouge is red because it contains ferric oxide. If it doesn't contain ferric oxide, it's not rouge.
jeweler's rouge was developed not just because of how fine it can be, but also because it stains the gold and gives it a sunny glow. Green and white rouge, as many people call them, are abrasive compounds, which are in most cases way too coarse to be used on gold or anything else of value. If you offered them to a jeweler as rouge, he would laugh at you.
For a start a good quality jeweler's rouge is three times the price of any other compound. There are some abrasives which are as fine as jeweler's rouge and finer, but they don't behave like jeweler's rouge, and jeweler's rouge they are not!
Because of this generalisation I have seen very aggressive abrasive compounds being sold as products that were suitable for use on jewelery and precious metals. Not good!
Metal Polishing Myths, Half Truths and Lies
2. All metal polishes will protect
Well, polishing will normally protect any surface, to some degree. However, many metal polishes contain ammonia or what is termed anhydrous derivatives. These often appear in new and many old, trusted and established products, including household names.
In fact they are the industry standard, and have recently been proven to cause premature aging of many alloys, especially brass and other copper alloys. Minute cracks and fissures appear after excessive use of ammoniates or anhydrous products.
Also, these chemicals will increase the tarnishing of the piece in the long run, and cause the item to lose its lustre fairly quickly. This means that even in a perfect, stable environment the items will need repolishing. Therefore the manufacturers sell more product.
Polishing with the correct products will increase the life span of any piece if it is done properly, whereas the use of ammonia and anhydrous products has been proven to do the opposite. A few manufacturers use mild acids instead of ammoniates or anhydrous. The result being that the acids etch into the metals instead.
One of the main things that makes anhydrous chemicals so bad, is that they will dissolve Zinc, a major component of brass, and nearly always present on aluminum castings. Zinc is also often used to stop steel from corroding. Anhydrous chemicals can destroy these materials.
The manufacturers that use acids are no better than the others. They still damage your pieces
paul