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KNIFEY - clicky, tiny utility knife (EDC)

npopson
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A2L
KNIFEY
KNIFEY
Designer
34 min
1 plate
5.0(4)
with Carnage logo - AMS
with Carnage logo - AMS
40 min
1 plate
Open in Bambu Studio
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95
21
4
70
44
Released 

Bill of Materials

Bambu Filaments
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Cyan (12601) / Filament with Spool / 1kg
PLA Tough+
x1

Description

The world did not need another printable utility knife, but I made one anyway. After 6+ months of testing, tweaking, and printing way too many versions, this is KNIFEY. A tiny 7 gram plastic utility knife with a satisfying click, smooth slide, and solid blade retention. If you want an even smaller knife, check out Knifey Micro (X-acto 11 blades).

 

The tolerances are tight and you must lubricate for it to slide properly. This is by design.

Printing tips:

  1. As always, make sure your bed is clean and sticky. I don't want to be seeing no bullshit reviews about fitment because the parts warped or the first layer is a mess.
  2. 0.16 layer height.
  3. Walls and infill to your heart's content. Works well with default minimums.
  4. Filament:
    1. Best: PLA Tough+
      Strong, springy, smooth, and the most satisfying overall.
    2. Good: PETG
      Works well. Feels a little looser.
    3. Okay: Basic PLA
      Works, but feels stiffer and has more friction.
    4. Avoid stiff exotic filaments like PPA-CF. They will not work. 

Assembly:

  1. Use a standard utility blade. The Milwaukee 3x utility blades are inexpensive and sharp. 
  2. Fully seat the blade into the cover. There should be no air gap between the blade and the cover. 

  3. Slide the blade and cover in. It will take a small amount of force for the retention bumps to go over the little ramp.

  4. Make sure you lubricate! I use Super Lube grease. A little dab will do ya.

Disassembly:

  1. This is not intended to be disassembled. So don't. However, if you insist: 
  2. Put some tape on the blade if it's your first time taking it apart. So you don't mess yourself up. But if you do, send pics.

  3. The trick is to pull the top edge of the cover away from the main body, and then the blade can be slid out.
    You might need to watch this like 10 times before you understand what I am doing. We're just getting the bumps on the cover over the little ramp.

You can tweak the blade dimensions, tolerances, and retention strength using the Customize tool in your desktop browser.

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compact
edc
knife
utility knife
utility
blade
cutter
keychain
utility blade
fidget
sliding
sliding utility knife
sliding knife

Comment & Rating (21)

(0/1000)
@MicroPlaStick
Boosted
Pinned by Designer
Print Profile
KNIFEY
THIS IS THE NEW KING OF THE HILL. I literally print most of this style of utility blade hunting the best in that world for a light weight small profile edc utility blade. This thing has to be the smallest most functional one I’ve seen. Previous to this one the Slicr based on the talon was my daily. This uses a very similar lock design although it’s more robust. No worries about it slipping out in my pocket. Printed in petg. A little general purpose wd40 and the action is firm but smooth. Photos and a couple comparing other models. The knifes is def the smallest and the jimping and slide serrations work well together.
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@npopson
THANK YOU I had to watch this thing in silence for a whole week waiting for its first review, lmao. I was praying the first review wasn't going to be something negative, because I really did pour way too much effort into this in very subtle ways to make it better than anything else I have tested. So glad you like it. Thank you for the kind review, and the comparison photos. I have printed a bunch of these others as well and I was going to include comparisons but decided against it. PS: Your first layer looks extra smooshed/over extruded. Especially on the backside. This was on a Bambu printer? I haven't seen first layers quite that bad before... lol. I have printed hundreds of Knifey's now and have never had a first layer that smushed. I am glad it still works well though - that is what I hope for (still work well with a bad print, which is not easy!)
(Edited)
1
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@npopson
Thanks for the boosts :)
(Edited)
1
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@MicroPlaStick
Boosted
Replying to @npopson :
So i got to thinking yesterday, Have you ever thought about doing a no11 xacto knife blade in a similar style to this? I've actually never seen any sort of xacto no11 blade used in this style, there may be a reason for that, that I'm just not seeing. I'd imagine you could cut the size of this thing in half. Just an idea, if i knew how to 3d model I'd attempt it.
(Edited)
profile
1
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@shelflevelhero
Print Profile
KNIFEY
I like it, i needed a sturdy little knife for opening boxes and this is just what i needed! thanks!
The profile uploader has replied
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@npopson
Damn that looks sick! Thanks for adding the print profile too. I foresee yours quickly becoming the popular one haha.
0
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@user_1308280257
Great model. I also printed quite a few different knives. Only one I was able to get to work satisfactory. And even that I had to trim the nubs that hold the blade. It seems not all blades have the same exact dimensions. Your blade cover fits my blades perfectly. I do have to work it in a little more. ( babysitting the grand kids take a lot of my time but I don’t mind) I will be trying your xacto  knife model soon. I fiddled with others and finally gave up. I use very small key ring knives  with a sliding blade my friend used to pass out to his customers. My knives are getting worn out and I think the xacto size would be perfect for that. Unfortunately Bambulab  doesn’t give me boosts to hand out anymore otherwise you deserve them.
designer
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@user_1308280257
Clamp the blade in a vise, sharp edge down. Much safer to assemble and disassemble. to prevent leakage. Even my wimpy clamp on vise was robust enough to get the job done.
The designer has replied
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@npopson
Good advise!
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@user_3839648263
Print Profile
KNIFEY
Excellent print
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@user_3008150491
Boosted
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KNIFEY
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License

This user content is licensed under a Standard Digital File License.

You shall not share, sub-license, sell, rent, host, transfer, or distribute in any way the digital or 3D printed versions of this object, nor any other derivative work of this object in its digital or physical format (including - but not limited to - remixes of this object, and hosting on other digital platforms). The objects may not be used without permission in any way whatsoever in which you charge money, or collect fees.

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