Premix the B side material. Measure the correct amounts of the A and B sides before combining them. VFI-4385 has a mix ratio of 2A:1B by volume or 100A:44B by weight. Mix up only what you need to prevent excess material. After mixing in one container, transfer to a new, clean container and mix again.

When ready to apply, do not leave the material in the mixing container. It will over-generate heat, which will cause it to thicken and cure faster. Leaving it in the container too long can cause an extreme buildup of heat and may cause the material to smoke.