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This tool builds a flat section hook for a rod, a closet rail or the top of a door to your measurements and exports it as STL. There are three types: the classic S with two opposite hooks, a closet rod hook whose top clips onto the rail, and an over-door hook that goes over the door leaf.
The top hook is 1 mm wider inside than the rod. The tip lip curls the hook end inwards and narrows the opening; the tool keeps the opening no narrower than the rod minus a small flex allowance, so the hook snaps on with a slight flex but never has to be forced. With a zero lip the opening is fully open.
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.
Hook type: S-hook · Rod diameter: 25 mm · Bottom opening: 30 mm +4
Open this variant: S-hook, 25 mm rod
Hook type: Closet rod hook · Rod diameter: 25 mm · Bottom opening: 30 mm +3
Open this variant: Hook for a closet rail
Hook type: Over-door hook · Door thickness: 40 mm · Bottom opening: 30 mm +5
Open this variant: Over-door hook for a 40 mm door
Hook type: S-hook · Rod diameter: 16 mm · Bottom opening: 20 mm +4
Open this variant: Small S for a 16 mm kitchen railThese 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 | ||
| Hook type | S-hook, Closet rod hook, Over-door hook | S-hook |
| Dimensions | ||
| Rod diameter * | 10–40 mm | 25 mm |
| Door thickness * | 30–50 mm | 40 mm |
| Door gap * | 1.5–3 mm | 2 mm |
| Bottom opening | 10–60 mm | 30 mm |
| Overall length | 50–210 mm | 110 mm |
| Section width | 4–12 mm | 6 mm |
| Thickness | 3–16 mm | 6 mm |
| Tip lip * | 0–90 ° | 30 ° |
Sizes marked with a star appear in the panel only when the related shape, style or option is active.
If the opening is wider than the rod, the hook falls off when bumped. If it is too narrow, you have to force it and the hook cracks. The tool keeps the opening at the rod diameter minus at most 8 percent (0.5 to 2 mm), so the hook opens slightly and seats.
Measure the door leaf thickness; interior doors are usually 38-42 mm and the tool makes the inside of the U 1.5 mm wider. With the door closed, also measure the gap above it and on the frame side: the bridge and back leg are made at the door gap thickness (1.5-3 mm), so pick a value thinner than both. The hook width carries the load of the thin bridge, so it is at least 16 mm; in PETG it safely holds coats of a few kilograms.
A PETG hook with a 6 x 6 mm section carries bags and pans of a few kilograms. For heavier loads make the section 8-10 mm wide.
A hook printed upright carries the load through layer adhesion and splits at the bend. Printed flat, layers run along the load and the hook is much stronger.
Both hooks need a minimum length; shorter values are extended with a note.
This tool builds a screw-on wall hook to your measurements and exports it as an STL. Pick a hook style, type the plate size and how far the hook should reach out in millimetres, set the screw holes, and the model is computed in your browser.
Sizes and details: Wall hook
This tool generates pegboard hooks, shelves and rings and exports them as STL. Pick the board: 40 mm pitch with 5x15 mm vertical slots, or classic pegboard with 25.4 mm (1 inch) pitch and Ø6 mm holes. Then choose the hook type and enter length and tip lip in millimetres.
Sizes and details: Pegboard hook
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.
Sizes and details: Bag clipOpen the template in the editor, enter your values and download a print-ready STL. No account needed.