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  • sarkozykal commented on jammin0's instructable JB Weld Casting2 years ago
    JB Weld Casting

    I'd suggest using one of the additives from West System Epoxy ( They're experts at this sort of thing. Offhand, it seems either West System 404 High Density Filler ( or West System 406 Colloidal Silica ( would do the job.

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