Print-in-Place Bag Clip

I made a new version with a stronger hinge and parametric source files. Check it out!

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Origin story

I needed a bag clip for my cat food but couldn't find one that would last more than a week. The problem was that the existing ones had some part that I needed to bend in order to close the clip, and it always ended up breaking. So, I decided to design my own bag clip with robust print-in-place hinges for higher reliability and cool factor :)

I've been using the very first version of this clip for about 8 months now and it's still going strong. This latest one is the most compact of my designs at almost half the width of the original. I achieved this with a new slim hinge, which allowed the arms to be much thinner without compromising strength.

Recommendations

As for printing this model, I recommend you use PETG for its great bed adhesion and mechanical resilience. You could use PLA too, but beware that it will deform over time due to the pressure of whatever you clamping constantly pushing the arms apart and eventually bending them slightly. If you do choose PLA you can restore the clip to its original shape by compressing it with some kind of clamp and putting it in warm water for 10 minutes.

Updates

• Added a super tight version, which won't unlock accidentally but requires a lot more force to use. • Added a tight version, which still shouldn't open accidentally, but requires a bit less force to use. • Added a 12 cm version • Added a 14 cm version • Added a 16 cm version • Added tight versions for the 12-16 cm size range • Organized files into folders by size • Added a 5 cm version • Revised the main hinge design to be more durable. (Original and super tight 10 cm clips are still available as alternative versions, everything else has been replaced)

Design and description by neoyarus , licensed CC-BY-SA.