Thanks, Celsoari for posting - nice finish and seemingly no gas pores in your cast?
For degassing I use a teaspoon of "pool chock chlorine" in a foil wrap and press it to the bottom of the crucible,
flux isn't really necessary for my alloy of choice.
-Don't chlorinate without a proper face shield, gas mask, apron & gloves though...
One thing I wondered, as your aerating your sand seemed to be a dry & dusty job:
-Are you using your greensand entirely dry?
I get very nice finish with my sand just a bit moist as per Myfordboy's and Olfoundryman's recipes:
When it comes to repurposing old Al casts I can recommend scrapped Al car wheel rims,
motor and transmission parts, table stands and office chairs
(those 5-star castor chair feet provide 5-6 lbs ( a litre) of alloy each)...
Keep up the good work and good luck!
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