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IndustryArena Forum > Mechanical Engineering > Epoxy Granite > Wich are the best filler for Epoxy?
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  1. #1
    Join Date
    Mar 2005
    Posts
    269

    Wich are the best filler for Epoxy?

    Hey guys, i was reading some nice posts about machines made from Epoxy and fillers like sand.

    I found that is possible to use calcium carbonate, dolomite, sand...

    Someone know wich will be the best combination to make an solid and not overweght machine using epoxy+fillers?

    Thanks in advance

  2. #2
    Join Date
    Mar 2003
    Posts
    35538

    Re: Wich are the best filler for Epoxy?

    A few threads down, is a thread with 5000 posts which explains exactly what fillers to use, and in what ratios.
    Gerry

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  3. #3
    Join Date
    Jul 2016
    Posts
    12

    Re: Wich are the best filler for Epoxy?

    Quote Originally Posted by ger21 View Post
    A few threads down, is a thread with 5000 posts which explains exactly what fillers to use, and in what ratios.
    thanks

  4. #4
    Join Date
    Mar 2005
    Posts
    269

    Re: Wich are the best filler for Epoxy?

    Quote Originally Posted by ger21 View Post
    A few threads down, is a thread with 5000 posts which explains exactly what fillers to use, and in what ratios.
    Thanks too much gerry. i read some of these posts a few days ago, will read it full this time!

  5. #5
    Join Date
    Sep 2012
    Posts
    108

    Re: Wich are the best filler for Epoxy?

    The aggragtes and fines used in concrete (cement) can be used in epoxy granit. Large stones 10-15mm down to fine sands graded to fill the voides. Sharpe stones add strength but make it harder to mix and work. Density is around 2200kg/m3 less than aluminium.

  6. #6
    Join Date
    Mar 2014
    Posts
    1131

    Re: Wich are the best filler for Epoxy?

    Hi,

    There are some different stones that can be used(?) in my area. These are;

    - Quartz sand:



    - A sand that is called "Silis" in Turkish. People use it on sand blasting.



    - Lastly some kind of black sand. It is used to decorate floor of aquarium/fish tanks.



    Would you use these as filler?

  7. #7
    Join Date
    May 2015
    Posts
    34

    Re: Wich are the best filler for Epoxy?

    I used two grades of quartz sand, and biggest aggregate was something like on your second photo, river sand. 8% to 10% slow curing epoxy, not vibrated, hand compacted with tools, and eveyrthing went well. Got the density of almost exactly 2 kg per cubic dm. Make sure to dry it well, as some bagged quartz can be little wet.

  8. #8
    Join Date
    Oct 2016
    Posts
    16

    Re: Wich are the best filler for Epoxy?

    Basalt is the hardest and should be the best option, i think. The weight should also be a benefit. However, i could not find basalt in all grain sizes, thats why i mixed basalt, marble, gravel and quartz sand.

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