Spring-Loaded Hex Bit Case Box - Free 3D Print Model

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Bear3DTek

Tools>Organizers

IP Report

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Print Profile(2)

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A1 mini

P1S

P1P

H2D

X1 Carbon

X1E

H2D Pro

H2S

P2S

H2C

X2D

A2L

0.2mm layer, 2 walls, 15% infill

Designer

3.7 h

3 plates

4.8(53)

2 color 0.16mm layer, 2 walls, 15% infill

4.1 h

2 plates

4.7(3)

Open in Bambu Studio

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Released

Description

Hey everyone, Bear here! I was never really satisfied with the flimsy case my hex bit set came in, so I took matters into my own hands and designed my own! What started as a simple storage solution evolved into a fun, fully 3D-printable, spring-loaded case!

No extra hardware needed! Well, maybe some glue xD The springs are 3D printed too. With a simple push of a button, the lid pops open automatically. It's a satisfying little mechanism that adds a bit of joy to tool organization. This case can hold up to 32 hex bits and even has a dedicated space for an extension.

The model consists of 8 easy-to-print parts, none of which require supports:

Outer Shell - [HexbitOuterShell.stl]
Lid - [HexbitSpringLidV3.stl]
Container Grid - [HexbitContainerGridV4.stl]
Release lock mechanism - [HexbitReleaseLockV5.stl]
Hexagonal Pins (x2) - [HexbitHexagonalPin.stl]
Lid springs (x2) - [HexbitLidSpringV1.stl]

Updates

Update! 05/05/2025: Just uploaded a STP file for you to customize the grid part :D So you can make it fit your needs! The file is HexBitContainerBaseBlank.stp Have fun!

Assembly

Assembly is straightforward but needs to follow this order:

Push the release lock mechanism firmly into its designated slot in the Outer Shell. Set this aside.
Attach the lid springs to the Container grid using the hexagonal pins.
Insert the lid into the assembled springs and Container grid. Secure the lid by inserting a small piece of filament (1.75mm diameter) through the designated holes, cutting it flush inside the Container grid.
Carefully insert the completed lid, spring, and Container grid assembly into the Outer Shell (with the locking mechanism already installed). I suggest adding some glue between the Container Grid and the Outer Shell.

Once assembled, you can start loading your hex bits! I really enjoyed designing this project and hope you have just as much fun printing and using it!

Comment & Rating (77)

@i3onkers

Boosted

Print Profile

0.2mm layer, 2 walls, 15% infill

This is great! I have so many bits laying all over the place. I will be making a few of these for sure.

The profile uploader has replied

@Bear3DTek

Hii!! ty so much for the make and the rating :D

@xyroon

Print Profile

0.2mm layer, 2 walls, 15% infill

It makes sense not to print them in PLA because the springiness will decrease I would print them in PETG

The profile uploader has replied

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@Bear3DTek

I agree! The springs will last longer if printed on PETG.

@COFADON

Print Profile

0.2mm layer, 2 walls, 15% infill

(Edited)

Strength Issue:While I was hoping to be fully satisfied with this design, it unfortunately did not meet expectations. I printed it twice, and on both attempts the right-side tab broke immediately after installation. This does not appear to be a user error or a filament issue, as I used two different brands of PETG with identical results. Additionally, the bit holders were slightly too tight, making bit removal difficult. I hope the designer receives this as constructive feedback and considers addressing these concerns. Reinforced locking tabs and a slightly looser fit for the bit holders would make this a highly functional daily-use item for me. Thank you.

The profile uploader has replied

@Bear3DTek

Hi there! thanks for the feedback. I'm sorry to hear that you ran into some problems with my model. I do want to make the locking tabs a separate part, so that it can be printed in a more optimal orientation for the type of force being applied to it. I designed the bit holders using measurements I took from the bits I own. They fit just fine for me, could you share the diameter of your bits? Perhaps I could make a version with a bigger holder diameter.

@COFADON

Replying to @Bear3DTek :

Thanks for your response. I believe you are probably in a country where metric measurements are used. I have bits that are 1/4" (SAE or Imperial). This is more than likely why mine are tight. The tab is absolutely the bigger issue here. I love this design and I appreciate the work you've put into it. Thanks!

@PoopyDunga

Print Profile

0.2mm layer, 2 walls, 15% infill

I like the way bits fit in it and don’t fall out easily

The profile uploader has replied

@Bear3DTek

Thanks for your review :D

@Makerspace987

Print Profile

0.2mm layer, 2 walls, 15% infill

A splendid project, beautifully designed and conveniently easy to print

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@benji_7

Print Profile

0.2mm layer, 2 walls, 15% infill

some of the bits fit perfect while I cant get some out of the part with my bare hands so I would increase the tolerances slightly for the bits and the spring is useless after few hours closed, it won't open properly and tries to keep the lid down. maybe its because of petg material properties... Its very thick and a waste of filament on some regions and it could easily hold 4+ extra bits in the rear as well. The opening mechanism is very hard to get your fingers to open because it just bends instead of moves. Thanks anyway for the storage solution.

(Edited)

@Nescrich

Print Profile

0.2mm layer, 2 walls, 15% infill

Check out what I just printed! The look and finish turned out perfectly.

@Bastelbude.shop

Thanks for the super cool Sunday project

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@eddygohjj

Boosted

Print Profile

0.2mm layer, 2 walls, 15% infill

Print profile, design and functionality are great! Simple to assemble and just works as it should be. Would reprint the springs in PETG once these springs lose its tension.