I'm currently planning to freeze out the acid and then filter it through a chilled filter set up. My end goal is to use this in combination with sodium bicarbonate to deliver a large amount of thrust. To a small 3D printed or paper airplane.

I was looking into quarter size A-engines but realized that that is far too dangerous for paper.

  • 1
    $\begingroup$ Better use citric acid - it can be bought pure. $\endgroup$
    – Mithoron
    Apr 3 at 17:13


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