I cut everything to size and prepared before I mixed the resin. I wanted to do it in two parts as I had so much to do and didn't want it all to go to waste before I could get onto the second part. I weighed as half and half but there wasn't 100grams in the resin bottle unless my scales were so far out as there wasn't a whole lot left in the bottle and went with it. I done what I had to do and as I was doing it, the mixture started to go hard so thought result, it's working.