All blades have the same size, 36cm long, aerodynamically well shaped. But. The first weighs 120g, the second 125g… And the third one 210g… This is a small problem. So what are my options now? Making a new blade would be the last option, but do I have any other options?
I have no experience here but could you add weight to the others to make them heavier? Maybe tape strips that will have minimal aerodynamic impact? If not, maybe sand or shave down the heavier ones until they match?