• What are the causes for fish-eyes or craters in Mirror Coat?

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    From our experience, cratering or fish eyeing almost certainly indicate that one of three things occurred during your application:

    1. Insufficient drying and/or incompatibility with a stain or oil: Pre-testing is always recommended when using products from another manufacturer.

    2. Sanding too smooth can cause the epoxy to draw away from the surface. For example, sanding higher than 220 grit will make it difficult for the Mirror Coat to overcome the surface tension of the substrate. 

    3. Lack of coverage: We specify pouring the MirrorCoat at 4 oz/sq ft to allow enough coverage on the substrate. Any less will result in a lack of adequate coverage.

     

  • Thickness of MirrorCoat

    A seal coat plus a flood coat per System Three recommendations yields approximately 70 mils of thickness or a fat 1/16".  This thickness can vary slightly depending on substrate porosity. 

  • How much Mirror Coat do I need for my project?

    Mirror Coat requires a total of 4.5 ounces per square foot (1/2 ounce for the seal coat and 4 ounce for the flood coat) of mixed resin and hardener. Therefore, you can multiply the square foot area of your project by 4.5 to calculate an estimate coverage. 

  • How to apply MirrorCoat over previously varnished wood.

    For best results, the varnish film must be intact, and not flaking or peeling.  Then Mirrorcoat can be applied and present a uniform appearance.  Ensure the film is sufficiently cured, clean, and sanded with 80-120 grit untreated sandpaper.

  • Can fine scratches or defects be buffed or sanded out of your products?

    Yes.  System Three® offers a sanding and buffing kit for sale on the website.  Contents are shown below.  The video shows its use with Mirrorcoat®, but it also works well on WR-LPU and coating epoxies like Silvertip™.  Click on the image for detailed information and to purchase.

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    A white paper literature piece can also be downloaded from the website here:

    Guide to Buffing and Polishing

  • Can fine scratches be buffed or sanded out of Mirrorcoat?

    Yes.  System Three offers a sanding and buffing kit for sale on the website.  Contents are shown below.  The video shows its use.

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    A white paper literature piece can also be downloaded from the website here:

    Guide to Buffing and Polishing

  • Mirrorcoat Heat Resistance/Temperature Tolerance

    The rule of thumb with cured Mirrorcoat® and how much heat it will tolerate is this:  If an object is not too hot to hold in your hand, you can set it directly on a Mirrorcoat surface which is completely (more than a week) cured.  If it is hotter, you must place a coaster or hot pad underneath the object.

    If you happen to put an object that is too hot on a Mirrorcoat surface, and it leaves a ring, the ring can many times be removed by passing a hairdryer back and forth over the affected area.

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  • How is Mirrorcoat applied?

  • Mirrorcoat epoxy has cured with some sticky spots. How do I fix it?

    The sticky spots are most typically uncured resin or hardener which hasn't been completely mixed in.  If it's excess resin it can be removed with a strong solvent like lacquer thinner.  If it's excess hardener it can be removed with soap and water.  The voids can be filled with small quantities of newly-mixed Mirrorcoat, carefully using a spatula or squeegee to smooth out any excess material.  Let this cure 24-hours and lightly sand the surface with medium-coarse sandpaper.  Finally, apply an additional flood coat at 4 fluid ounces per square foot.

  • Can I use TransTint dyes with System Three epoxies?

    While we have received positive feedback from customers who have used small amounts of TransTint liquid dyes, we have not tested it in our lab to guarantee it will work well. The majority of our epoxies are solvent free, 100% solids epoxies so care should be taken when introducing these solvent based colorants. The user should test the TransTint dye to ensure it cures to their satisfaction.

  • Compatability of Mirrorcoat with Spar Varnish and WR-LPU

    If your Mirrorcoat® project is going outside, and will be exposed to a significant amount of sun, it needs to have UV protection.  We manufacture two products compatible with Mirrorcoat and are easily applied after simple surface preparation:

    Marine Spar Varnish

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    WR-LPU

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