How much epoxy can you mix at once?

The purpose of this article is to explain how much epoxy you can mix at once. Epoxy is a useful and versatile product that has many uses, but there’s one thing it can’t do: be stored in large quantities.

This means that if you want to make a large amount of epoxy, you’ll need to mix several small batches instead of one big one (and then wait for them all to dry).

How much epoxy can you mix together?

When mixing epoxy, you should never attempt to combine more than one cup of resin with a hardener at a time. This is because the chemical reaction between both parts will cause the mixture to heat up and expand in volume, which could lead to it overflowing onto your work surface or spilling out of its container.

If you are working on small projects where mixing just a few drops of epoxy at once is sufficient, then this rule may not apply—but if odds are that you’ll need more than one cup (or equivalent amounts) then it’s best to stick with our advice here.

Mixing epoxy should be done using a paint stirrer—the kind used for mixing paint—and at a slow speed. You can also use an electric drill instead if desired; however, this is not recommended as it makes it much easier for the resin and hardener components from getting stuck together in large clumps that can make them difficult or even impossible for you later on down the line when applying them over your project surface area(s).

When everything has been thoroughly mixed together well enough where there aren’t any visible lumps anymore (i.e., clear/translucent), then this means that all ingredients have been properly combined into one fluid substance!

How much epoxy can you pour at a time?

  • Measure the depth of your pour and only mix enough epoxy to fill that amount.
  • Use a dispensing pump, available at most hardware stores, so you can control how much epoxy is being used.
  • Pour in layers instead of trying to pour all of it at once. This will give you better control over how thickly it goes on the surface and allow for fewer bubbles in your final product.
  • Fill the mold with sand or other support material before pouring for added strength and durability when removing it from the mold later on (if applicable).

How do you mix large amounts of epoxy?

You can mix large amounts of epoxy using a drill and paint mixer. The next time you need to mix large quantities of epoxy, follow these steps:

  • Use an electric drill to mix the two parts together.
  • Mix them well so that they are completely combined.

Can you mix epoxy resin too much?

The short answer is yes. The long answer is: that it depends on the other ingredients in your epoxy resin, as well as what you are using it for. If your mixing ratio is off and you mix too much epoxy, your project might be ruined by a weak or brittle product (or both).

However, if you’re working with an epoxy that has a longer working time (some of our products have longer working times), then there is less chance that mixing more than necessary will be problematic.

How do you calculate epoxy ratio?

To calculate your epoxy ratio, you’ll need to know how much resin and hardener you’re using. For example, if you have 3 ounces of resin and 2 ounces of hardener in your batch, we’d say the ratio is 1:1 (the same as a 4-ounce batch with 1 ounce of each).

If you’re mixing clear epoxy, the ratio doesn’t matter because the color comes from pigment added to the mix. If it’s colored epoxy like our G-Flex line or traditional System Three Resins that has a colorant built-in (like regular Gels), use this formula:

How do I calculate how much epoxy I need?

Calculating the volume of epoxy resin you need to fill your mold is easy. Simply multiply the length x width x height of your project, and then divide by 27 cubic inches/gallon (the approximate amount of resin in one gallon).

For example, if you’re making an 8-inch cube with a 2-inch thick base: 8 x 8 x 2 = 128 cubic inches. 128 ÷ 27 = 4.29 gallons needed to cover the entire piece (rounded up).

If you’re mixing two different types of resin together for a special effect or application, be sure to consider how much each type will contribute to that final amount before calculating how much total epoxy will be used.

What happens if you pour epoxy too deep?

If you pour epoxy too deeply, it can overheat and bubble. To get rid of bubbles, use a propane torch or heat gun to pop them out. Heat the area that is bubbling up until all of the bubbles pop.

Don’t worry if you pour epoxy too deeply! You can make thick pours with this method–it just might take a little extra work.

Can deep pour epoxy be poured thin?

You can pour deep-pour epoxy thin, but it depends on the thickness of your resin. The resin should be no thicker than about 1/8″. If you pour it too thin, it will dry too quickly and not fill the mold.


The conclusion of your epoxy mixing process is as important as the beginning. You don’t want to pour too much of the stuff into one container and risk spillage, but you also need to make sure that you’re getting a nice, even mixture.

If you do this correctly, though, then all will be well!

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