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Hardware Designs

@hardware

Joined November 2026

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Nuts, brackets, hooks, clamps and other hardware made with OpenSCAD. Change the sizes, then print. Enjoy!

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by Hardware Designs

Crank Handle

A hand crank with a square, hex, round or D bore and a grip that spins on its pin. For awning winders, pasta rollers, window cranks, winches and anything with an adjusting screw. The arm prints flat and the grip prints upright, then snaps onto the pin. A pointed set screw hole holds it on the shaft.

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Flanged and Cap Nuts

Printed hex nuts with a washer flange that spreads the load on wood and plastic, or a domed cap that covers the sharp end of the bolt. Metric and UNC sizes, with a clearance setting so the thread suits your printer. Prints upright with no supports, several at once.

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Lever Handle Nut

A clamping lever for router fences, drill press tables, tool rests and camera rigs, where a round knob slips in your hand. Straight, cranked or paddle lever, 35 to 140 mm long. Use a printed thread, a pocket for a steel nut, or a bolt head pocket. Prints flat with no supports.

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Wing and Thumb Nuts

Hand-tightened nuts for M5 to M12 and 1/4 to 1/2 inch bolts, in wing, big wing, knurled, star and lobed shapes. Pick a printed thread, a pocket that grips a steel nut, or a pocket for a bolt head to turn it into a thumb screw. Prints upright with no supports. Printed threads hold best from M6 and 1/4 inch up; below that use the steel nut pocket.

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Turnbuckle

A fully printed turnbuckle with one right-hand and one left-hand eye bolt. Turning the body draws both eyes in, for tightening garden wire, shade sails, banner lines and display rigging. The left-hand eye has a notch and the left-hand end of the body has a groove, so you can tell them apart. All three parts print upright with no supports.

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Strap Slides and Line Tensioners

Tri-glide adjusters, strap keepers and D-rings for 10 to 50 mm webbing, plus three-hole tensioners for tent guy lines and clotheslines. Everything prints flat with no supports, a sheet at a time.

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Rope Cleat

A horn cleat for tying off flag lines, blind cords, tarps, hammocks and garden netting with a quick figure-eight. Set the length, rope size and width, and bolt it down through both posts. Prints upright with no supports. The horns rise at 45 degrees.

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Tie-Down Ring

A folding D-ring anchor for truck beds, trailers, crates, garden netting and gym straps. The ring comes off the bed already trapped under its strap, and folds flat when you are not using it. Prints flat in place with no supports. Screw down both pads.

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Table Corner Guards

Rounded covers for sharp table, desk, shelf and hearth corners, sized to the thickness of the top. Use double-sided tape, or turn on the lip that hooks under the edge. Prints upside down with no supports. TPU gives a softer bump.

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Ball Caster

A snap-in caster for steel balls, marbles and airsoft BBs from 5 to 40 mm, for robots, carts, drawers and sliding furniture. Two ears, three ears, a round flange or no flange, with an optional riser. Prints flange down with no supports. Press the ball in until the fingers click over it.

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Furniture Feet and Leg Caps

Screw-on cone feet for boxes, cabinets and appliances, and caps that slip over round or square chair and table legs. Add a shallow recess on the bottom for a felt pad. Prints floor side down with no supports. TPU grips the floor; PETG slides.

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Closet Rod Sockets

Wall sockets for wardrobe rails, curtain rods, towel bars and dowels. Print a closed cup for one end and an open cup the rod drops into at the other, so the rod lifts out. Set the rod size, cup depth and flange shape. Prints flange down with no supports.

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Pull Cord Handle

A grip for attic ladders, roller blinds, pull switches, garage door releases and zip pulls. The knot hides in a pocket on top, and the hole is sized to your cord. Bar, finger groove and toggle styles. Prints flat with no supports.

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Over-the-Door Hooks

Hooks that hang over the top of a door for towels, coats, robes and bags, sized to the door so it still closes. Up to five hooks down the front, with your choice of drop, hook depth and tip height. Prints on its side, so the layers run along the bend and the hook does not snap at the corner.

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Cabinet Knobs

Drawer and cupboard knobs in mushroom, disc, bell, square and hexagon shapes, 16 to 60 mm across. Fix them with an M4 or 8-32 nut that slides in from the side, a heat-set insert, or a wood screw pilot. They print upright on the base with 45 degree flares, so a kitchen's worth fits on one plate.

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Cabinet Turn Buttons

Swivel catches that hold cupboard doors, picture frame backs, hatches and display panels with a quarter turn. Flat buttons for frame backs, stepped buttons that reach over a door edge, and a wing grip for fingers. Prints face down, a sheet at a time, with no supports.

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Pipe Saddle Clamps

One-hole and two-hole straps that hold pipes, conduit, tubing, dowels and LED profiles to a wall or bench. Print one size, or a run of common sizes from 6 mm up to the size you set. Prints on its side, so the layers wrap around the pipe and the strap does not split along the arch.

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Loop Clamps

P-shaped loop clamps for cable bundles, hoses, tubes and pipes, from 3 mm cords to 50 mm hoses. The strap wraps once and both ends meet in a double tab, so the screw pulls the loop closed. Prints flat with no supports. Turn on the assortment to print a whole run of sizes on one plate.

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Hole Plugs and Tube End Caps

Snap-in plugs that close unused holes in cabinets, enclosures and laser-cut boxes, and end caps for round and square tube. The split fingers flex in and the barb catches behind the panel or inside the tube. Prints face down with no supports, with a chamfered, flat or ribbed face.

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French Cleat

A matched pair of 45 degree cleats for hanging heavy signs, mirrors, cabinets and tool walls level and flat against the wall. One half screws to the wall, the other to the piece, and the piece drops on. Both halves print flat on their backs with no supports.

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Picture Hangers

Keyhole plates, sawtooth hangers, D-ring straps and wire anchors for the back of signs, frames and wall art. The keyhole plate has a hollow channel behind the slot, so it works on a flat back with no routing. All four types print flat with no supports.

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Mirror and Panel Clips

Offset clips that hold mirrors, acrylic sheets, pegboard, picture glass and laser-cut panels flat against a wall or a frame. Round clips sit on an off-centre screw and turn aside to release the panel. Bar and corner clips hold edges and corners. All styles print face down with no supports.

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Patterned Switch and Outlet Plates

North American wall plates for toggle switches, rocker switches and GFCIs, duplex outlets and blank boxes, one to three gangs. The face carries an inlaid second colour in diamonds, herringbone, basketweave, plaid, waves, scallops or honeycomb, with an optional framed border. Prints face down. Change filament after the first three layers, or print in one colour and the pattern shows as an engraving.

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Snap-In Cable Bushings

Strain relief bushings that snap into a hole in a panel, enclosure or laser-cut box and keep the cable off the cut edge. Size it to the cable and panel thickness, with room for up to three cables side by side. Prints flange down with no supports. Push it through until the fingers click behind the panel.

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