Hello everyone, this is the file for my 3D printed balisong, or as I call it, "Dadisong," because "dado" in my language means "nut," so it could also be called "Nuttisong."

The hardware should snap-fit and remain secure in a normal flipping condition. However, a bit of glue can be very helpful, so when it falls on the ground, nothing shifts. Some of the nuts, depending on your printer, may have too tight or too loose tolerance. For the ones that are too tight, you can fit them in with a soldering iron or something hot; however, this makes the nut permanent.

I highly suggest printing this with a brim because some of the supports needed for the pegs are very small and, at least in my case, would not stick to the bed without the brim.

The tolerances for the pivot system can be a bit tight. I did this intentionally so that when you assemble it, you can tighten the pivots and move them to create a sort of race for the washer, which will result in less handle play.

I believe ABS would be the best material to print this with, I tried PETG, but I think it's too flexible and creates significant handle play, while PLA, being stiffer, helps with this.

The blade has a notch that is used to keep the handles slightly apart when they are closed. The gap is significant; however, you can file the notch to achieve the gap you prefer.

The zen pins are directly embedded in the model.

A bit of lubricant isn't harmful.

The hardware required for this is
2 m4 x 10 mm bolts
2 m4 washers
30 m4 nuts ( if you want to put them all)
2 m6 x 12mm bolts