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  1. #141
    holmburgers's Avatar
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    I would say that this is a dysfunctional family indeed... haha
    If you are the big tree, we are the small axe

  2. #142
    shaz's Avatar
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    .

    Shaz

  3. #143
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    Umut;

    Contrary to many reports, Ethyl Acetate is not very harmful and is in fact an ingredient in many wines and flavorings. It is used to remove caffeine from coffee and tea. So, you are probably safe from most toxic effects, but not from its flammability or explosive nature.

    PE

  4. #144
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    PE, you speack about wine...Louis Lumière speack of wine filter in the Lavedrine book...
    what is a wine filter please ?

    Shaz

  5. #145
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    Quote Originally Posted by shaz View Post
    It's now that i need help for find the good filter when the damar will be dissolved. And where to put this filter... Everybody can give me ideas....
    Picking on some information from the traditional painting crowd - Wrap the damar gum crystals (powder) in a filter bag and suspend it in the solvent. Leave for several days until the gum has dissolved. Further filtration can be used if desired.

    Coffee filter papers are cheap and should be sufficient to filter out all but the smallest of particles.

  6. #146
    shaz's Avatar
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    paul_c5x4, i speack about nylons with holmburgers 1 or 2 pages before...then i will see for this or coffee filter.

    Shaz

  7. #147
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    Toluene is quite toxic to inhale or get on your skin. It can cause liver or kidney damage. IDK if it is a carcinogen. I would have to look it up.

    A wine filter is a paper filter, for our purposes it would be fluted. We call it "fluted filter paper". It is used in wine making and chemical operations that require or can use gravity filtration as opposed to vacuum filtration. Vacuum filtration will harm wines due to the volatility of the aromatic essences present.

    PE

  8. #148

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    Hi, I'm new on APUG and just read through this amazing thread. Shaz, your attitude is amazing. I happen to know quite a bit about chemistry and have handled both toluene and ethyl acetate myself. The reason ethyl acetate is dangerous is that in its pure form it vaporizes at room temperature and it is an organic solvent (basically it's pretty bad for your brain to inhale and you will feel very dizzy after a short while, if you manage to drink some you should call an ambulance immediately). Toluene is pretty toxic as Photo Engineer says, but both are pretty easy to handle - just make sure you have proper ventilation (you might want to do the chemistry outdoors or near a open window) and use gloves, preferably nitrile gloves. They are much better for handling organic solvents than regular latex gloves.
    Last edited by nullbyte; 05-02-2011 at 12:55 PM. Click to view previous post history.

  9. #149
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    If the work is done indoors by an open window, a breeze blowing into the room will cause problems if there is a stove pilot light, a hot light bulb or other source of ignition. This is best done outdoors.

    PE

  10. #150
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    Ok guys, i will prepare the first varnish outside with apropriate gloves, mask and glasses. And thank you PE for "fluted filter paper"...i will have a look on internet and translate this in french...I hope i will start soon now.
    Thank you nullbyte .

    Shaz
    Last edited by shaz; 05-02-2011 at 01:03 PM. Click to view previous post history.



 

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