As you know
- candy is top metal in DF for price, armor and it is best fit for edge weapons.
- platinum is the heaviest metal in DF and is best fit for blunt weapons.
Before you start embark, you need to move platinum (2nd) and adamantine (1st) to the top of the list in the inorganic_metal.txt. Then you need to delete annoying waffles [wafers] from adamantine and add [ITEMS_WEAPON][ITEMS_WEAPON_RANGED][ITEMS_AMMO]. Why platinum is missing it anyhow? That makes no sense. Decorative gold armor was known already in ancient times.
Then you need to acquire 1 platinum bar. Smelting something you got through adventuring in case caravans never have it and you cant buy it on embark.
You need 9 magma smelters, 9 metal workers with enable smelting and 10 stacks of coins of metals you are short on for trade-coin-split. Use macros and speed macro repetition in init.txt from 15 to 5: [MACRO_MS:5].
Now, you will ask what it all has to do with making best value in fortress out of copper, copper alloys... and out of silver and out of gold and their alloys.
You make master quality items of all kind from adamantine (except those you can't like beds). Then in metal forge:
other objects -> chose metal, one by one -> stud with each of the metals
Ever wanted to build candy mountain home? Here is how you do it, to make it even more valuable then from candy alone and you need also copper for that.
(until Toady will find time to polish those broken mechanics...)
PS. Adamantine mechanisms, studded with all those metal bars, still weight as made out of adamantine only. You will never be able to smelt those decorations and smelting decorated adamantine items will lose you those other metals bars spent on ornamentation. However it will sky rocket value of your fortress and make great value for trade... Until Toady will fix smelting issues, smelting 1 coin is integral part of DF.
PS2. If everything was fixed with smelting, then I guess copper would be metal to make in fortress all kind of items for commoners, while steel/gold for nobles and adamantine for king and champion's equipment & weapons. Silver for common areas I guess. This would be more realistic DF.