In a very old topic, the calculations for resin usage were address by Paul Statham in a chart. THANK YOU Paul! But until I saw this topic, I had not seen any data for the infusion mesh and how much resin must be prepared and used for the mesh. I expect it is different for each type of mesh, but where is this data found? Is it typically listed under the specs for the mesh?
Also, Paul  wrote that there was a formula  for calculating the resin usage, but  all I saw in that topic was the chart and no formula. Can someone point me to a complete formula?


A Lifelong Learner

For fibre reinforcement it is pretty simple: let's say you want to achieve 60% fibre content in the fibre layers. You take your cloth weight, and calculate the volume of the fibres using the density. ÷60 x40 and you got the volume of the resin. For hybrid cloth you have to assume the volumetric relation of the two types of fibres. A bit more work, but basically the same. For better understanding, given the same cloth weight and resin content, glass uses less resin than carbon, and carbon less the aramid. Hybrid is between carbon and aramid. For core materials you have to either experiment yourself, or use given data for the resin uptake. Same for flow mesh. Different mesh consume different amounts of resin. But is doesn't make a difference whats under the mesh. It's just a layer like everything else when it comes to resin consumption. For thin parts the flow mesh usually takes more resin than the parts itself. That's a fact you have to life with. At lest with resin infusion.