Trainer Balisong (aka butterfly knife) by eclien

eclien

Tools>Hand Tools

Print Profile(3)

All

A1 mini

P1S

P1P

X1 Carbon

X1E

[Needs Screws, read model description] 2Color, Hex bottom as instructed: 0.16mm layer, 2 walls

1.7 h

1 plate

4.5(67)

[Needs Screws, read model description] 2 Color, Solid Bottom, Full Infill 0.16mm layer

1.7 h

1 plate

5.0(2)

3color 0.16mm layer, 3 walls, 40% infill

1.7 h

1 plate

5.0(1)

Boost

155

238

599

710

Released

Description

My son wanted a trainer balisong (aka butterfly knife) for his Halloween costume. I found a few 3D Printable designs out there and printed them. But the weight and size never seemed right. So, I figured I would just custom design one for him.

Print Settings: I printed the first few layers with an accent color, no bottom layers, and 30% honeycomb infill. Then I did a M600 color change and switched to 100% rectilinear infill for weight.

The only hardware required is Qty:4 M3x10mm button heads, and Qty:4 M3 hex nuts. If you want more weight you can swap the printed pins for 5mm OD metal pins (qty:6 x 10mm, qty:2 x 12mm).

I have included the plate of STL's as well as a STEP, the original Solidworks files (sorry can't upload the assembly… MakerWorld still doesn't support the .sldasm file type). I also included a link to an Onshape import.

Onshape: https://cad.onshape.com/documents/e653a823015d37890a0a78f6/w/8b21972e8d6b2f68293fe0e7/e/1a2cb4fab845d202c35e7a39?renderMode=0&uiState=633b02c5179c912951c45efd

Video of my feeble attempt at a balisong flourish: https://photos.app.goo.gl/tg8wC2idECXPQcQW6

Modify and customize it to your hearts content.

Update: Added a rounded tip version of the blade as an optional download (More Kid Friendly)

Update 2: Hardware notes since I have had the request a few times:

"I get pretty much all my stainless metric hardware from Trimcraft Aviation RC. Gino there is amazing and so is his family. And the prices are crazy cheap for reasonable quantities. I have essentially built up an entire stainless metric hardware store with them over the years and different projects. Here is some example links.

https://www.trimcraftaviationrc.com/index.php?route=product/product&path=24_2_27&product_id=37

https://www.trimcraftaviationrc.com/index.php?route=product/product&path=14_35&product_id=133

Pretty Sure Gino buys from a wholesaler like Brighton-Best (https://www.brightonbest.com/download/catalogs/usa/BBI_USA_SS.pdf.), but breaks them down into reasonable quantities for hobbyists. And if you need something not listed just ask him, he can probably source it and add it to the website."

Comment & Rating (88)

@ds007airsoft

Print Profile

[Needs Screws, read model description] 2Color, Hex bottom as instructed: 0.16mm layer, 2 walls

favorite butterfly knife I have found so far it’s just what bolts and nuts did you use?

The designer has replied

@moonrakerone

hardware required is Qty:4 M3x10mm button heads, and Qty:4 M3 hex nuts

@FloppyThigh

Print Profile

[Needs Screws, read model description] 2Color, Hex bottom as instructed: 0.16mm layer, 2 walls

Printed pretty nicely! Needed a little force to shove the pins in.

@Stardude31415

Print Profile

[Needs Screws, read model description] 2Color, Hex bottom as instructed: 0.16mm layer, 2 walls

This turned out really well. I will probably print another one with a silver blade this time. I like the use of the hexagons, it was pretty smart. All of the holes line up perfectly. When I assembled mine, I used lock nuts so it wouldn’t get loose and fall apart. The only downside that comes with that is the lock nuts, being thicker, stick out from the handle a little bit. Overall, it’s a great design!

@moonrakerone

Fantastic model! I like the creative use of infill you recommended. Pretty easy to assemble. The six short pegs go in the handles, the two longer ones go in the blade. (I found it easiest to insert the blade pegs last, and press them against the underside of my table) Works REALLY well, I love that you included a printed axle instead of just relying on the screw, I expect this will not loosen nearly as often as my other printed balisong.

(Edited)

The designer has replied

@eclien

Your print looks great. I love your color choice.

@pduzyiii

Print Profile

[Needs Screws, read model description] 2Color, Hex bottom as instructed: 0.16mm layer, 2 walls

thanks

@BigKev

Print Profile

[Needs Screws, read model description] 2Color, Hex bottom as instructed: 0.16mm layer, 2 walls

prints good and works fine :)

@baltus.dani

Print Profile

[Needs Screws, read model description] 2Color, Hex bottom as instructed: 0.16mm layer, 2 walls

Very fun to fidget with great design, thank you!

@pupik1204

Print Profile

[Needs Screws, read model description] 2Color, Hex bottom as instructed: 0.16mm layer, 2 walls

nice n smooth!

@Umutayb

Print Profile

[Needs Screws, read model description] 2Color, Hex bottom as instructed: 0.16mm layer, 2 walls

not familiar with these but it printed clean!

@copehill077

Print Profile

[Needs Screws, read model description] 2Color, Hex bottom as instructed: 0.16mm layer, 2 walls

The knife fits well and is smooth to operate. Although, it would benefit the user if the shorter and the longer pegs were clearly identified as well as the orientation of the handles, took some time to figure out both of them on my own based on other's pictures.