# How much resin and hardener do I mix?

## How much resin and hardener do I mix?

Mix the resin VOLUME – To achieve the correct 2:1 mix ratio by volume, simply measure out 2-parts resin to 1 part hardener before mixing the components. WEIGHT – The exact weight measurement for these ratios is slightly different from the volume ratio due to resin and hardener density.

## What is the mixing ratio for Fibreglass resin?

approximately 2.5 : 1

The ratio of resin : fibreglass is approximately 2.5 : 1 i.e 1 kg of fibreglass requires approx. 2.5kgs of resin.

**What happens if you put too much hardener in fiberglass resin?**

Adding too much of either resin or hardener will alter the chemical reaction and the mixture will not cure properly.

### How do I calculate how much resin I need?

Divide the diameter by 2 to calculate the radius. To calculate volume in cubic inches: (radius squared) X pi (or, 3.14159265) x (desired epoxy coating thickness). Divide by 1.805 to convert cubic inch volume to US fluid ounces.

### How much hardener do I need for 8 oz fiberglass resin?

DIRECTIONS: Mix Polyester Resin and Hardener using 12 drops of Hardener per ounce of Resin.

**What is the ratio of catalyst to resin?**

Generally speaking, for Polyester Resins, the mixing ratio is 2% i.e. 20ml for every 1kg of Resin in working conditions at room temperature. For the Water Clear Casting Polyester Resin, this drops to 1.5% or 15ml for every 1kg.

#### Why is my resin bendy after 48 hours?

In most cases, the reason you have resin that bends is due to the fact that the resin needs more time to cure. After 24 hours, ArtResin will be at a 95% solidity rate. If you attempt to curve or move the resin before that 24 hour mark, the resin will likely bend.

#### Why is my resin not hardening?

Well, there are a few reasons this could be happening. If your ratio of resin to hardener is off, your resin will not harden. If the ambient temperature in your workspace isn’t ideal, or if your resin mixture has been contaminated, this could also cause your resin to not cure correctly.

**How do you calculate resin for fiberglass?**

Fiberglass cloth is rated in ounces per square yard. One gallon of resin will wet out 60 ounces of cloth. Fiberglass chopped strand mat (CSM) is rated in ounces per square foot and requires 2 times its weight in resin for adequate wet out. 1.5 oz.

## How do you calculate resin ratio?

To calculate the amount you will need, in metric, you will need work out the size of the volume you wish to fill, convert that to the capacity and finally convert to the required weight: Total Weight = (Width x Height x Depth) / 1000 divide by a thousand when mesuring in millimeters.