Weighted Balisong M4 Fasteners

Print one handle normally and another mirrored. There is both a double ground and single sided blade; the single sided is much easier to print and my recommendation. Fasten together with 2 M4-16mm bolts, 4 M4 washers, and 2 M4 locknuts (you can use normal nuts, but locknuts are recommended). There are spaces in the handles and blade to add M4 nuts for weight.

The balisong is slightly longer overall than the original, which I thought was a bit short. With all 43 M4 nuts added for weight, it is reasonably heavy, although still nowhere near the weight of my metal bali trainer.

Total weight:
70 grams (2.5 oz) with all nuts added.
40 grams (1.5 oz) without any nuts for weight. (100% infill)
Weight of my metal trainer: 170 grams (6 oz).

All files are oriented for best printing. There is also a version without any holes for nuts if you just want a quick and easy assembly.

Fasteners required:
2x M4-16mm bolts
2x M4 locknuts
4x M4 washers
43x M4 bolts (for added weight)

With a bit of silicone lubricant, it flips pretty well: https://youtu.be/p450AaAcBeI