Fully Printed Lock (6 Pin Tumbler)

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Fully Printed Lock (6 Pin Tumbler)

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Print Profile(2)

All
P1S
P1P
X1
X1 Carbon
X1E
A1
A1 mini

0.2mm layer, 2 walls, 15% infill
0.2mm layer, 2 walls, 15% infill
Designer
4.8 h
4 plates
4.9(9)

One print
One print
Designer
3.8 h
1 plate
3.7(3)

Open in Bambu Studio
Boost
187
328
29
16
232
69
Released

Description

Boost Me (for free)

I’ve put a lot of time and effort into designing this lock from scratch. If you are able, I’d really appreciate a boost to help it reach more makers. Thank you!

Description:

When I set out to find a fully 3D-printable tumbler lock for learning purposes, I realized there wasn’t anything quite like what I had in mind. So, I decided to design one myself! This lock is a functional 6-pin tumbler lock that requires a key to open, just like a real padlock. It’s been carefully optimized to work well with 3D printing, making it both an educational tool, functional, and  a fun project for makers.

Key Features:

  • No Extra Hardware Required: This padlock is entirely 3D printed—no screws, springs, glue, or additional parts needed
  • Compact Design: Lightweight yet robust enough for light-duty applications
  • Fully Tested: The locking mechanism has been refined to ensure reliable operation

Assembly Instructions

  1. Print all the pieces
  2. Insert key pins into the tumbler 
    1. Putting the key in the keyhole helps identify where all the pens go
    2. The tops of the pins should be level with the surface of the tumbler when assembled properly
    3. The orientation of these pins also matters, it should be oriented so that the rounded surface is on top and matches the curvature of the tumbler
  3. Insert the tumbler into the barrel
    1. There is only one way that it fits due to the chamfer
    2. make sure that the pin holes are lined up
  4. Insert the driver pins in the barrel
    1. Orientation does not matter
  5. Insert the springs
  6. Use the pin cover to close everything in the barrel
  7. Put the lock body on a flat surface with the barrel shaped hole facing up
  8. Put the shackle pins in the bottom of the hole
    1. These pins go into the holes in the bottom with the rounded end facing out
    2. they should be pushed as far into each hole as possible
  9. Insert the barrel with the attached tumbler with the key hole facing out
    1. It is helpful if you check the lock mechanisms functionality at this point
    2. It is easiest to insert the barrel when it is in the unlocked position
  10. Flip the lock over and put the screw in the correct shackle hole
  11. Use a flat head screwdriver to tighten it
    1. Make sure to not screw it in too tight
  12. While the lock is still unlocked, insert the shackle and lock the lock
  13. ALL DONE!! ENJOY!!

Note that the lock parts may need some cleaning up to function better and that it may need to be operated a few times for smoother operation

 

If you print this successfully or you have any questions please leave a comment or pictures. I will get back with you as soon as possible! Also, feel fee to make changes to any of the models and post them as remixes or make new print profiles!

 


Documentation (1)

Assembly Guide (1)
Lock Assembly.pdf

Comment & Rating (29)

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"this is a Fully Printed Lock (6 Pin Tumbler) it can be opened using a Fully Printed Lock (6 Pin Tumbler)."
The designer has replied
5
Reply
Can it though? Someone needs to send a few of these to McNally to test this theory, lol
5
Reply
Haha, that might be true! But in the spirit of fun, have you tested your theory? I’d love to hear the result! Just to emphasize, this model is really more about the fun challenge of designing and printing a functional 6 pin tumbler lock, as well as helping people deepen their understanding of how locks work.
1
Reply
Replying to @I_Epic :
Since they key isnt the right size I built it and locked it. It can be opened using a .050 turning tool from CI
0
Reply
Print Profile
0.2mm layer, 2 walls, 15% infill
my shackle came out scuffed but I'm so happy with this print that I don't care. truly amazing, one of my favorite prints. well worth a boost
The designer has replied
1
Reply
thanks for the boost!! the “no support shackle” is much easier to print and comes out a lot nicer.
0
Reply
Boosted
Print Profile
0.2mm layer, 2 walls, 15% infill
printed perfectly x1c. absolutely incredible lock. no sanding or supplies. it is very impressive. nice work.
The designer has replied
1
Reply
thanks for the picture! glad you like it!
0
Reply
Print Profile
0.2mm layer, 2 walls, 15% infill
I can finally keep my room secure with a plastic detailed padlock toy. Lovin' it
1
Reply
Print Profile
0.2mm layer, 2 walls, 15% infill
Very nice model and well tuned profile.
1
Reply
Boosted
Excellent, a video would be necessary for assembly
The designer has replied
Show original
2
Reply
Thanks for the recommendation! I just uploaded an Assembly Guide with pictures. I hope this helps!
(Edited)
0
Reply
Boosted
Replying to @JPlum25 :
Thank you, but after several attempts, I succeeded without assembly instructions. It works perfectly. Bravo!
Show original
1
Reply
This needs more views, amazing design.
The designer has replied
2
Reply
really appreciate you!
1
Reply
The key is sized wrong. Doesn't fit the hole in the tumbler, it's too thick for the slot. Maybe you uploaded different scales of each plate?
The designer has replied
1
Reply
Sorry about the misunderstanding! Apparently I had the wrong tumbler uploaded on the print profiles. I'm not sure how anybody got this thing to work since this tumbler was from a previous version with different sized pin holes too. I have now uploaded the correct tumbler on everything and uploaded a separate print profile for just the tumbler for everyone. Thank you so much for pointing this out!!
0
Reply
Replying to @JPlum25 :
Awesome, thanks
1
Reply
Print Profile
0.2mm layer, 2 walls, 15% infill
Print profile perfect.
1
Reply
Waiting for my refill petg to get here before I print the springs, however the key is 3.5mm thick and they keyhole is only 2.5mm wide...do you hve a file for a thinner key???
1
Reply