It is hard to track how many blades you generate and how many get wasted because you're capped, but practically speaking, the only thing that matters is if you have 5 blades by the time you want to use F1 or F2, which both do. Infinite Forge's "bonus" value comes from being at 5 blades following phasing delays, which many fights tend to have; however, the value of that is hard to measure.