I would like to make my own Sterling and Argentium Metals... Is this possible ?

I currently possess a large number of pure silver bars (500 oz's) and
a LOT of pure copper.  Can I combine (using a proper scale) the proper
weights and make my own Jewellry grade silver in a crucible ?  I've
seen many a link where this is being done, but I have never spoken
with anyone who has "Actually done it".

Is the process more difficult than it looks ?  Is making a strip sheet
of sterling or argentium even possible without foundry type tools ?

Are there other metals that one can produce in a shop environment ?

Some Tools / supplies currently on hand:

-Kiln (very soon)
-Oxy/Ace Torch
-MAPP / Propane
-Small crucibles
-Stainless Steel, Carbon Plates, etc...
-Lots of silver, Copper, Bronze, Brass, Steel, etc...

Cheers,

/FC