Who has a cauldron which will hold 650lbs of alloy in which to "mix it altogether"?
I have never seen one.
So I have pondered that question as well when working on my stash. My current supply is in a gangly assortment of sheets, muffin ingots, bar ingots, cake pan ingots, and 5 gal buckets of indoor range splatters. Alloys in the various forms I described in my previous post.
So I'm going through each set of alloys, melting and pouring them into a standard set of ingots. A bar ingot 2.5lbs each. All of these ingots are marked with the alloy type and batch #.
Then when done, I'll use the individual alloy ingots to make batches of my preferred alloy. Melt, mix, flux, and pour into ingots. 60-75lbs batches at a time. Each batch again marked with a batch number.
Here's the extra part since I don't have a giant cauldron:
Now I will take the ingots of my preferred alloy mixing batches equally to produce the final product. I'll have 8-10 batches of my final alloy. Ingots are 2.5lbs each. So mixing those batches together will be pretty easy. The end result being as well blended as I can muster.
For me, the extra effort is worth it since it's my plan to have this stash last me for the remainder of my casting days.