Classic Spring Carabiner – Print-in-Place
Print Profile(2)
Description
Membership
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⚠️ Read this first
This looks like an easy 15-minute print, and it is, but only if you have the right plate, spotlessly clean (and/or with glue), and you use my included print profile / tuning.
The working spring gate is print-in-place, which means the first layer has small separated segments. If the plate isn't clean, or the settings are off, those little segments lift or get dragged before they bond, and the gate fails. PETG is the fussy one. Follow the profile and a clean prep, and it genuinely comes off the plate in ~15 minutes with a working snap.
❌ Do NOT use a textured plate
Use a smooth / engineering PEI plate (clean; glue stick for PETG). Avoid textured plates for this model.
Why: a textured plate grips by keying the plastic into its rough surface, which needs a decent footprint. The gate's fine first-layer details sit in tiny separate islands with almost no footprint, so on a textured surface they can't key in evenly and get knocked loose before they bond. A smooth plate gives full flat contact (plus glue when needed), which is what those small features need to survive layer one.
What it is
A classic carabiner with a working print-in-place snap gate. Prints in one piece, no assembly, no hardware, no spring to add. Just a satisfying snap.
Honest use
An everyday clip: keys, bags, pouches, gear organization, zipper pulls.
Not rated safety equipment. Never use it for climbing, fall protection, or holding people or heavy loads. In my own testing the gate stayed shut and popped open at no less than 10 kg (twice in a row), so it holds a fair bit for a printed clip, but treat that as "don't hang off it," not a load rating.
Pairs with
My Rope Ratchet Tensioner: clip it on, tension your line.
Print settings
Plate: smooth / engineering PEI, spotlessly clean. Glue stick for PETG. No textured plate (see above for why).
Exact tuning (works for both PLA and PETG):
| Setting | Value |
|---|---|
| Layer height | 0.20 mm |
| Initial layer height | 0.25 mm |
| Initial layer line width | 0.55 mm |
| Wall loops | 6 |
| Initial layer speed | 30 mm/s |
| Skirt loops | 1 |
Brim (required for PETG, optional for PLA if you get lifting):
| Setting | Value |
|---|---|
| Brim type | Outer brim only |
| Brim width | 2 mm |
| Brim to object gap | 0.2 mm |
The included profile already has all of this set.
License
You may create derivative works based on this object, provided that all such derivative works are published exclusively on the MakerWorld platform and include proper attribution to the original creator. You may not share, upload, host, distribute, or publish this object—or any derivative work of this object—on any other digital platform, marketplace, or distribution channel. Commercial use of this object and any derivative works is strictly prohibited. This includes, but is not limited to, selling, renting, sublicensing, or using the object in any context in which you receive monetary compensation or other financial benefits.
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