Toy Butterfly Knife (No Hardware Needed)

Toy Butterfly Knife (No Hardware Needed)

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506
172

Print Profile(3)

All
A1 mini
P1S
P1P
X1
X1 Carbon
X1E
A1

[2 Plate]: 0.2mm layer, 3 walls, 25% infill
[2 Plate]: 0.2mm layer, 3 walls, 25% infill
4.3 h
2 plates
4.7(123)

0.2mm layer, 3 walls, 25% infill
0.2mm layer, 3 walls, 25% infill
3.4 h
2 plates
4.8(16)

0.2mm nozzle, 0.08mm layer, 4 walls, 15% infill
0.2mm nozzle, 0.08mm layer, 4 walls, 15% infill
12 h
1 plate
2.0(1)

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365
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172
13
1.1 k
1.6 k
Released

Description

This is a toy Butterfly Knife / Balisong I designed. No metal hardware such as screws or bolts are needed.

 

Check out my new fidget spinner and print in place bearing here.

 

You can find my other toy knife designs here.

 

You can obtain a commercial license to sell prints of this here.

Print Settings

Resolution:

0.1 mm

Infill:

100%
 

Notes:

This is designed with very tight tolerances so print quality is very important. Two slicer settings that I would recommend tweaking are print resolution (smaller is better) and outer wall speed (20 mm/s is good). If your still having problems with the screw tolerances you can try shrinking them in the x and y directions.

Assembly Instructions

The first step for assembly is to separate the handles and blade from their bases. Firmly grip the base and snap it off. Next, use small pliers to remove the supports from the pin holes at the top of the handles and bottom of the blade. File down any material left in the pin holes from the supports. I recommend using a small circular file but a knife would also work.
The blade pins should have a very loose fit with the blade and a tight fit with the handles. Also check the fit between the blade and the handles. If it is too tight and does not rotate smoothly, file down the inside surfaces of the handles until it rotates smoothly. Once everything fits together smoothly, use a flat head screwdriver to screw the pins in place. I would also recommend applying a plastic lubricant on all contact surfaces.

 

Image of all the parts before supports are removed.

 

This video shows what each part should look after the supports have been removed. It also shows how to assemble them.

 

This is an image of how it should look after being assembled.

Comment & Rating (172)

Please fill in your opinion
(0/5000)

Print Profile
0.2mm layer, 3 walls, 25% infill
Needs oiled a bit to get a good action but it's a solid print.
The designer has replied
2
Reply
thanks
(Edited)
2
Reply
Print Profile
0.2mm layer, 3 walls, 25% infill
great print in PLA CF
The designer has replied
1
Reply
thanks
(Edited)
1
Reply
Replying to @Gerard74 :
no problem I am on my 3rd set for the kids
0
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Everything seems to line up fine but as soon as I put in the bolts it makes the handles flare out ever so slightly, would like it to work just straight from the print but looks like I might have to drill out the blade holes in order for the handles to not get flared out... Anyway you could fix this? Printed in Bambu basic pla
The designer has replied
1
Reply
Thanks for commenting. All butterfly knife handles are designed to flare out. This feature is important because it causes tension when the handles are latched together. This tension prevents the handles from accidentally coming unlatched during use.
(Edited)
9
Reply
Print Profile
[2 Plate]: 0.2mm layer, 3 walls, 25% infill
Great print! PLA matte and silk...got the blade to have a different color on each side got a blue gem-ruby! :D Joints were a little stiff at first but after playing with it for a bit it moves great!
(Edited)
1
Reply
did everyone else’s print this way?
0
Reply
yeah mine put those giant supports too, just trust the process it came out fine for me
0
Reply
Came out pretty solid. Fun to play with at my desk. You'll want to really make sure you trim the brims off this one 👌👍
1
Reply
Print Profile
[2 Plate]: 0.2mm layer, 3 walls, 25% infill
Great model! It's a little stiff but hopefully after messing around with it it'll loosen up :)
1
Reply
The print came out beautiful. I printed it at .08mm high quality in PLA Tough. all the hardware fit together with zero effort. Well made model. Thanks!
1
Reply
Love the print! Rotates smoothly without resistance after playing with it a little.
1
Reply
Print Profile
[2 Plate]: 0.2mm layer, 3 walls, 25% infill
Cool print thanks
1
Reply