IMHO for the backyard guy, you want hard surface and low wear? Low silicon aluminum with a lot of copper. That means add about 3x the amount of the skull brass (bronze) in the pot (the heal of a just poured heat,) of aluminum extrusions. It should have a light yellow tinge, but is aluminum bronze that is hard with good wear characterics, and high strength. Again, consult the chart for the real compound alloy, and give it the best guess. A lttle lead will maintain machinability. Once more, the more lead, the greater the ductility to a point, but dont expect a lasting polish on anything that is leaded brass/bronze. Also, bell material has very low lead, a lead bell will not ring.
When alloying always melt the higher temperature metal, (copper- brass) and add the lower temp addition, ( aluminum-zinc-tin-lead) to assure complete solution mixing. Pouring a finger bar in sand can give you a quick check for color, strength, and bend testing, or pour a slug through water for a color test.
Complex journal boxes are the perfect excuse to explore lost wax/plaster process for fine measure and almost no machining. Only fit touchups are needed.
Big Dave, former Millwright, Electrician, Environmental conditioning, and back yard Fixxit guy. Now retired, persuing boats, trains, and broken relics.
We have enough youth, how about a fountain of Smart. My computer beat me at chess, but not kickboxing
It is not getting caught in the rain, its learning to dance in it. People saying good morning, should have to prove it.