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This tool generates a one-piece clip that closes the top of a bag and exports it as STL. Enter a length between 60 and 200 mm, plus jaw thickness, clip width and spring thickness in millimetres. The two jaws join through a spring loop at one end; the whole part prints flat and needs no assembly.
With the hook and catch, the jaws print open; pinch the bag, press the upper jaw down and the catch at the tip grabs it. With the spring U, the jaws print almost closed with a 0.5 mm tip gap, the bag slides in from the chamfered tips and the spring holds it. The panel estimates spring strain as a percentage.
Free, no sign-up. Change the sizes in millimetres and download the STL.
Each variant is the same template with different settings. Follow the link and the editor opens with those values.
Lock type: Hook and catch · Length: 100 mm · Jaw thickness: 4 mm +3
Open this variant: Hook and catch lock, 100 mm
Lock type: Spring U · Length: 80 mm · Jaw thickness: 4 mm +3
Open this variant: Spring U, 80 mm, smooth jaws
Lock type: Hook and catch · Length: 160 mm · Jaw thickness: 5 mm +3
Open this variant: 160 mm for wide bagsThese values are edited in the editor's template panel. A number outside the range is clamped to the nearest limit automatically.
| Size | Range | Default |
|---|---|---|
| Shape | ||
| Lock type | Hook and catch, Spring U | Hook and catch |
| Dimensions | ||
| Length | 60–200 mm | 100 mm |
| Jaw thickness | 3–8 mm | 4 mm |
| Clip width | 6–25 mm | 10 mm |
| Spring thickness | 1.2–4 mm | 1.6 mm |
| Options | ||
| Toothed jaws | On / Off | On |
The spring loop bends every time the clip closes. The panel spreads that bend along the loop to estimate surface strain; a thicker spring or shorter clip raises it. PLA starts to crack around 2%, so the tool warns above 1.5%, while PETG handles it thousands of times.
The hook and catch clamps the bag firmly and does not open by itself; push the tab at the tip outward to release it. The spring U has no lock: it goes on and off with one hand, but a very thick fold can push the spring open. Toothed jaws stop the bag from slipping with either type.
Fold the top of the bag once or twice and clip it, and in practice no air gets in. A single layer may leak slightly; toothed jaws reduce that.
No. The clip prints as one piece and works straight off the bed; on the hook and catch type the slope on the catch guides the upper jaw.
Up to 200 mm. A long clip strains the spring less but the jaw middle can flex; above 150 mm use a 5 mm jaw thickness.
This tool builds a C-shaped clip sized around your cable and exports it as an STL. Enter the cable diameter, mouth opening and clip width in millimetres; the two-tab base comes ready to screw or tape down, and the model is computed in your browser.
Sizes and details: Cable clip
This page opens the DrawSTL hinge template: a classic knuckle hinge whose two leaves interlock at the knuckles, sized in millimetres and downloaded as a print-ready STL. With the built-in pin option the two leaves print as separate bodies in the same job and seat on each other through 45 degree cone pins, so there is nothing to assemble.
Sizes and details: Hinge
This page opens the DrawSTL box with lid template: a parametric rectangular storage box with a press-fit lid that you size in millimetres and download as a print-ready STL. Width, depth and height are inner dimensions and the wall is added outside them, so typing 60x40x30 mm really gives you that much usable space.
Sizes and details: Box with lidOpen the template in the editor, enter your values and download a print-ready STL. No account needed.