Appreciate the input Greg, and Ray.

Graduated cylinders would be more accurate, but the much greater expense put me off. so I went with these $1.29 plastic bottles. The cheapest plastic cylinder was many times more expensive, and glass cylinders are much higher than plastic.

As a youth, I used my grandfathers glass cylinder, and had very good results. I wonder though, if he ever noticed a change in flavor when testing his home made brandy in the same cylinder?

Seriously, he only tested the specific gravity of a small sample of brandy out of the still, and then cut the full batch with distilled water, and added burnt sugar for color. The last batch I helped him with was 155 proof out of the still, and was cut to 110 to make it easier to swallow.

Expansion of these plastic bottles is probably insignificant, as all the ingredients will be at the same relative temperature when measured. The only real change from my original batches, is that I'm no longer spraying JD directly into Castor oil, which seemed to make the mix foam violently, and probably trapped what ever propellant was used in the mix.

My intention is to measure the Kerosene in one container, the Ether in another, and then combine the two, before pouring the mix into a measured amount of Castor oil. A 2% shot of DII will be added, before transferring the mix to a metal can.

Does that procedure sound reasonable?

JD is the only source I have for Ether at present, other than some other brands of starting fluid of unknown contents. I can no longer send a ten year old kid to the drug store, to buy a pint of medicinal Ether as I did at that age.

Sport control line flying is all that I do these days (and way too little of that), so perfectly blended fuel is a luxury I probably don't need.

Bill