Let me explain,
For the most part, 90% of balisongs have the same basic dimensions, hole spacing, and tang pin spacing. that is where it ends. Since the tang pins are "peened" after being put in place, the depth of the "cups" in the handles will be different. If you take 10 new Jaguars that have never been flipped and set them out closed but not latched you will fine that the handles are allstopping at different points. The aluminum wears quickly and conforms to each individual pin so the gradually even out. With stainless there is no wear and I need to adjust the depth of the "cups" to get a tension that is just right when the knife is closed. I use .125" handle gap at the ends in the closed position and .1875" in the open position. The cup depth can vary from .040" to .070" depending on the tang pin. This I found gives the perfect tension in both positions. Now, the "kick" on the blade. If you look at Jaguar blades you can see they are stamped out of steel and then the profile is ground to form the edge. The rest of the blade is pretty much left alone and there are a lot of burrs and shearing around the edges. I have to make the slots of each handle a different depth so the blade edge won't rub on the inside of the handle and so there will be proper tension when the knife is closed. This slot depth can be from .380" to .410" depending on the blade. Just an example, on some blades when the slot depth is .380" the handles are 1" apart in the closed position, in other cases they are .250" apart. I hope you can see that these are truly custom knives made for their specific blades and there is really no way to "mass produce" handles and send them out. If every blade was identical it would be easy. I only want to produce a product that I know will work and the customer will be extremely happy with.
Hope this answered your questions.
Eric