Different brands of Resin have different ratio of clear and hardener mixing. The amount is mentioned in the label of the bottle.
I have used three different brands of Resin and have observed the following
A resin that cures very fast like within an hour has a very short working time as opposed to one that takes 24hrs to cure. A fast curing resin will be more viscous and a slow curing one will be very fluid in the beginning.
Temperature also affects the curing process. If the room is very cold it would be a good idea to dip the clear and the hardener bottle in some warm water with the bottle cap closed to make it more fluid.
Use a weighing scale to measure the amount of Clear and Resin. Once you pour both the liquid in a paper cup use a popsicle stick to mix it well. Mix slowly and gently to avoid getting a lot of air bubbles. The slow curing resins usually are easy to mix and give less bubbles.
To remove bubbles use a flame lighter or a heat gun and go over the surface where you have poured the resin for about 5-6 seconds. Do not use it for long as it will affect the curing process.
Krafty 