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Experiments with filtering and cleaning used Isopropyl

Discussion in 'General Chat' started by Lord-Marcus, Jun 16, 2022.

  1. Lord-Marcus
    Slann

    Lord-Marcus Sixth Spawning

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    So, for work I use 91% ISO to clean resin prints.

    Any excess resin on the models mixes with the alcohol and thus the alcohol will progressively exhibit:

    A) cloudiness

    B) a green tinge. I use transparent green resin so this makes sense.

    I call this stage 1.

    I transfer used alcohol into recycled glass canning jars.

    Anywho, the resin cures with UV light, sinks to the bottom and forms a sludge layer, and the green color fades to a yellow. this is not a perfect process, which has caused some frustration on my end. When the alcohol reaches this point I call it stage 2.

    I've recently been researching how to properly clean and filter my alcohol so as to recycle it as much as possible.

    One document I read suggested leaving used alcohol outside in the sun for several days. I have a porch that gets a fair amount of sun during the day.

    So, I've decided to run a few experiments and keep track of progress. Starting with leaving 3 bottles out in the sun for several days in a row.

    Once as clear as possible, I am going to strain them through a couple micron filters and then repeat the process.

    I put these 3 bottles out Wednesday morning. Leftmost was yellow green, right two were pretty much emerald green. Unfortunately I did not think to snap a photo at the time.

    This is how they looked after the sun went down.

    PXL_20220616_031906592.jpg PXL_20220616_031901625.jpg
     
    Imrahil likes this.

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