Gently place a 50kg load (a heavy vise) on the center of the top plate. Use a 0.01mm dial indicator at the edge. If deflection exceeds 0.2mm under load, the crack has propagated through the neutral axis.
Disclaimer: This article is for informational purposes. Always wear safety glasses when operating any press tool. Exceeding the RA Workshop 36’s rated load of 200kg voids all implied warranties.

