ok i’d only use isopropyl or 200 proof food grade ethanol..
a blend? not sure what you mean by that..
a 5 gallon pail of 99.9% isopropyl cost me $180-220 canadian..
the methods for using both are pretty much the same..
there are other ways of evaporating off the alcohol if you don’t want to use a rice cooker, but that generally means using your stove top.. i like to do this extraction not inside my house as fumes are the danger!!!
so i use a rice cooker.. i’ve taken out the fuse and replaced with a wire to stop it from shutting off to early in the process..
even though your thinking about making RSO oil i’d make it more of a QWISO or QWET type, basically freezing everything first and not allow the mix to sit together too long..
before filtering allow the mix to sit for a day to have all sediment/dirt to settle at the bottom to help keep it out of the next filtering, than i let that sit, than usually good enough as i pour that into the rice cooker id stop before sediment poured in, keeping it clean and pure, no biggie if some gets in, i’m just picky.. most times i’ll set my jars on an angle to let the sediment settle before pouring in..
cooking off will have a distinct smell so i usually do in the middle of the night and during bad weather or a storm.. i have a sunroom to do it in..
just make some the easiest way you can than as you learn you’ll understand things better and create your own method etc..
lots of people here make it using different alcohol and different methods so lots of help for you here…