In order to extract the value of the percolation point for a macroscopic system, we extrapolated the results in the limit 1/𝑉 = 0 according to two different models. First, motivated by the linear alignment of our MD results, we used simple linear regression and estimated the percolation point of an infinite system as 𝑝 ! = (61 ± 2)%. The second approach is based on the universality of critical phenomena. Quite generally, the transition in finite systems is expected to occur when the correlation length 𝜉~|𝑝 -𝑝 ! | "' is of the order of the linear size of the system 𝑉 #/& . For percolation in three dimensional systems, the critical exponent is 𝜐 ≈ 0.88, which gives the curing percentage 𝑝 -𝑝 ! ~𝑉"#/(&') ≈ 𝑉 ").&+ . This fitting is plotted with a brown dotted curve in Figure , and it gives the estimate 𝑝 ! = (55 ± 4)%. Both of our predictions for the macroscopic percolation point compare very well with the experimental result of (57 ± 2)%, obtained by viscometric measurements coupled to monitoring of reaction extents by NMR. However, the results of our simulations do not allow us to clearly distinguish between the two proposed power laws, even though our largest system exceeds typical MD setups. It thus remains open to be clarified if the observed transition indeed belongs to the 3D percolation universality class.