The resin I just bought is thicker compared to the same resin previously bought,why?
This sometimes happens when resin that is stored has not been or has been forgotten to be rolled back and forth (if stored in 225 kg drums) prior to de-canting into smaller drums or tins. Resin has a tendency (like many liquids) to “separate” or to settle as the styrene comes to the surface making the resin thinner on top and thicker towards the bottom. Before using resin from your drum or tin it is good practise to always roll or move back and forth the resin to mix before putting into a smaller container to catalyse and use.Resins also get thicker in cold weather and can be made thinner by placing the resin drum in the sun to warm, make sure the resin is moved back and forth to uniform mix the resin. Resins that are thick in consistency will take longer to penetrate the fibres of your reinforcements (example-fibreglass mat).