3D-printable automotive, RC & hobby parts
Car inserts, RC bumpers, slot-car bodies, drone guards and hobby parts with real dimensions. Browse what makers built, or describe the exact part you need and Printy makes it.
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Rover Rocker-Bogie Linkage
A rigid frame is useless when half the wheels are off the ground. This replaces the solid chassis problem with the exact kinematic linkage used on the Mars rovers, ensuring all six wheels maintain contact over uneven terrain. The kit is laid out for flat printing without supports and assembles via flanged friction pegs. Assembly Clearances Holes: 8.0 mm Pegs: 7.6 mm (0.4 mm clearance for smooth rotation) Short Pegs: Connect the chassis to the long rocker arms, and the rocker arms to the smaller bogie arms. Long Pegs: Mount the six wheels to the ends of the arms. The flange acts as a built-in washer to keep the wheels from rubbing the linkage.
Micro Detail Greeble Set
A kitbash set of 10 micro-detail parts, each confined to a 5×3×2 mm bounding box. Built to add texture and mechanical scale to larger surfaces. Sizing and Spacing The layout holds them in a 12mm grid for printing, but the pieces themselves are the exact dimensions requested. A 0.4mm nozzle will catch most of the geometry, but stepping down to a 0.25mm nozzle or using resin is where details like the 0.8mm bolt holes and 0.4mm vents will actually resolve. Remixing These are baseline primitives. You can easily alter them by combining files: Scale: Uniform scaling up by 200% makes them suitable for standard 1:12 or 1:24 scale props. Vents and Ribs: The spacing on the vents (1.2mm) and ribs (1.5mm) can be tightened if you are printing on a high-resolution SLA machine. Bases: The 0.5mm and 0.6mm base plates can be stretched independently to form longer mounting strips before placing the mechanical features.
Serpentine Visor Glasses Clip
A continuous serpentine sweep of tensioned plastic, this dual-sided clip mounts securely to a vehicle's sun visor while gripping a pair of sunglasses on the opposing side. The unbroken S-curve silhouette allows both arms to act as heavy-duty leaf springs, utilizing the material's natural memory to maintain a firm hold without the need for metal hardware. Fitment & Geometry Visor Mount: Sprung to accommodate standard 8mm to 12mm car visors, expanding up to 14mm with an inward-facing tongue to lock onto the edge. Optical Jaw: Features an internal wedge taper that slopes from 6mm down to 2mm, firmly trapping thick acetate frames or thin wire rims. Structural Flow: Designed to be printed flat on its side, ensuring the layer lines run parallel to the spring arms to prevent delamination under continuous stress.
Squared Inner Handle Bezel
A replacement inner door handle bezel for automotive applications, built with an extended flange and a squared-off recess contour. Incorporates a large-radius relief curve to sit flush against padded door cards. What it's for Replaces cracked or missing interior handle surrounds. Features reinforced retention clips and thick mounting walls to handle tension without shearing. Dimensions Total Outer Area: 153 mm × 81 mm Recess Depth: 24 mm Lever Cutout: 49 mm × 54 mm Print notes Standard rigid plastics like ABS, ASA, or PETG are recommended for automotive interiors to handle high cabin temperatures. Print flat on the front face (flush rim) for optimal layer orientation on the snap clips.
Lego 6-Stud Railcar Cab studs on top
A 6-stud-wide cab front modelled after modern sloped-nose Irish railcars (such as the 22000 Class). Fitment Base footprint: 6 x 2 studs (48mm x 16mm). Height: 3 standard bricks (28.8mm). Mounting: Drops onto standard 8mm-pitch studs. The part is designed as a solid block rather than a hollow shell, using 5.1mm clearance holes in the base. This provides FDM printers with a clean, support-free printing experience while maintaining a firm friction fit on standard brick ecosystems. The rear face is completely flat, allowing seamless mating with standard brick walls behind the cab.
Electric Guitar Jack Plate
A 3D-printable replacement output jack plate, styled after the standard oval 'football' and pill-shaped plates used on many electric guitars. Modelled slightly thicker than a standard stamped metal plate to ensure strength when printed in plastic. Length: 48mm Width: 26mm Screw Spacing: 37mm (center-to-center) Jack Hole: 10mm (fits standard 1/4" guitar jacks) Tip: If your guitar body has a pronounced curve where the jack mounts, you can briefly warm the printed plastic with a hairdryer or heat gun to gently form it to the exact radius of the wood before screwing it down.
Truncated Annular Aerospike Nozzle
Standard bell nozzles are a rigid compromise—they only hit peak efficiency at one specific altitude, meaning they waste fuel everywhere else. The aerospike solves this by turning the engine inside out. The exhaust plume expands against the central spike on the inside and the atmosphere itself on the outside, automatically adjusting its own expansion ratio as pressure drops. This is a functional model of an annular aerospike, heavily optimized for FDM printing. It uses a mathematically derived 1.5-power-law curve for the central plug, which efficiently redirects the radial flow from the combustion chamber into pure axial thrust. Engine Specs Throat Gap: 2 mm annular clearance around the base of the spike. Truncation: The spike is cut at 80% of its theoretical ideal length. This flat base eliminates dead weight while retaining roughly 99% of the full-spike efficiency, thanks to base-pressure recirculation. Support Structure: 6 internal struts carry the outer cowl load across the combustion chamber. Printability: Fully print-in-place with no supports required. The base sits flat, and the steepest overhang in the combustion section is well within safe limits.
li only
A sloped-console enclosure for a custom battery power box. The case features a sloped front panel for mounting a DSN-VC288 volt/amp meter and a generic battery level indicator, positioning them at an ergonomic viewing angle. Outputs: Four 14 mm barrel jacks on the front panel. Inputs: One 14 mm barrel jack and a 17×12 mm power switch cutout on the rear. Internals: A segregated 70×60 mm battery compartment with retaining walls. Assembly: Four M3 corner bosses meant for heat-set inserts, securing a drop-on top plate.
20mm Suction Cup Feeding Ring
A 70mm floating feeding ring designed to corral flake food and keep it clear of the filter intake. The unit anchors to the tank glass via a single suction cup mount and features a fully enclosed hollow 12mm rim to maintain permanent buoyancy. Fitment details: Mounting standard: Mates with a standard 20mm aquarium suction cup. Neck clearance: 6.5mm center bore with a 2.5mm side entry slit. Slip the rubber stem through the channel rather than forcing the nub through a rigid hole. Incompatibilities: Will not fit oversized heater-mount cups or miniature 4mm airline tubing clips. Verify the neck diameter of the suction cup before printing.
OO Gauge Terraced House Kit with gable and roof, separate windows and doors
A detailed, printable facade kit for OO Gauge (1:76.2 scale) model railways or dioramas. The kit includes the main frontage, two matching brickwork side walls, a gable end, and textured roof panels. Build Details Scale: OO Gauge (4mm to 1ft) Dimensions: Main frontage 64×72mm, side walls 10×72mm, roof panels 48×14mm Features: Staggered brick mortar cuts, recessed door panels, window frames, and shingle-textured roof panels. Assembly: All pieces print flat. The roof panels feature a 45-degree mitered apex edge so they butt up cleanly at a 90-degree angle when glued to the gable end.
Cristal 10mm Tubo 40mm Caja Sump
Caja de decantación y filtrado mecánico para instalación en el sump del acuario, diseñada para tubería de bajada de 40mm y calcetín estándar de 100mm. El enganche trasero asienta directamente sobre el borde del cristal (hasta 10mm de grosor) y utiliza un sistema de raíles prolongados y pasadores. Esto permite colgar el cuerpo principal completamente por debajo del borde del cristal del sump, dándote margen para ajustarlo exactamente al nivel de agua que necesites. Especificaciones de encaje Tubo de bajada: Paso libre de 42mm en la tapa para tubo estándar de 40mm. Filtro mecánico: Aro portacalcetín a 140mm de altura, compatible con calcetines de 10cm / 4 pulgadas. Cristal del sump: Garganta del colgador diseñada para grosores de hasta 10mm. Desborde: Ventanas de alivio perimetrales a 155mm de altura para evitar desbordes generales si se satura el calcetín. Tornillería: Sistema de anclaje mediante pasadores integrados en el soporte; no requiere tornillería extra.
Skimmer Inlet Mesh Cap
What it's for A friction-fit cap designed for the Octo Reef Classic 110-S skimmer nozzle. It features a hexagonal mesh face to maintain water flow while keeping snails out of the inlet, and solid walls to grip the fitting securely. Dimensions Inner diameter: 32 mm Total height: 20 mm Mesh openings: 5 mm circumscribed hexagons (roughly 4.3 mm flat-to-flat) Wall thickness: 2 mm Print notes The model is oriented to print upside down with the mesh resting on the bed, requiring zero supports. An interior chamfer on the open end helps it slide smoothly onto the nozzle. PETG is recommended for longevity in aquarium environments.
T3 Transporter Double Cab
A stylized, single-piece model of the classic T3 Transporter double cab (Doka). It captures the signature wedge front, the shortened rear bed, and the boxy utility stance. The geometry is built specifically to sit directly on the build plate. The wheels share a flat contact patch at ground level, and the window angles act as self-supporting bridges, making it a reliable print-in-place model. Integrated base: Flat-bottomed wheels keep it stable during printing. Recessed trim: Windows and grill are built as internal blocks to give depth to the side panels. Drop-bed: The rear bed is recessed 5mm behind the cabin to mimic the real utility platform.
T3 Transporter Double Cab
A stylized, single-piece model of the classic T3 Transporter double cab (Doka). It captures the signature wedge front, the shortened rear bed, and the boxy utility stance. The geometry is built specifically to sit directly on the build plate. The wheels share a flat contact patch at ground level, and the window angles act as self-supporting bridges, making it a reliable print-in-place model. Integrated base: Flat-bottomed wheels keep it stable during printing. Recessed trim: Windows and grill are built as internal blocks to give depth to the side panels. Drop-bed: The rear bed is recessed 5mm behind the cabin to mimic the real utility platform.
1/400 Widebody Jetbridge
A static 1/400 scale airport jetbridge model, dimensioned specifically for widebody aircraft like the Boeing 777, 787, and Airbus A350. The model is scaled so the cab floor rests roughly 11.5 mm off the apron, translating to a 4.6-meter door sill height in real life. Features: Rotunda: 20 mm tall pivot base to anchor against terminal buildings. Tunnels: Fixed stepped sections showing the inner and outer telescopic sleeves, topped with low-profile AC units. Bogie: Quad-wheel lift mechanism bridging the ground and the junction. Cab: Angled head with a protruding bumper seal to interface with the aircraft fuselage. Designed with robust 1.5 mm minimum strut thicknesses to survive FDM printing at this scale. Resin printing is recommended for the sharpest results on the wheels and AC boxes.
OO Gauge Terraced House Kit with gable end not good
A terraced house facade for model railways, now complete with a separate matching gable end and textured roof panels. The brickwork and quoins evoke classic British railway architecture, designed to sit seamlessly beside track setups or diorama streetscapes. Additions Gable End: Completes the vertical facade, rising 20mm with continued mortar lines and coping stones. Roof Panels: Two separate 15mm-deep sections with an interlocking tile texture, ready to cement in place. Print Layout: All parts are arranged flat on the bed for straightforward printing without supports.
Waist-Level DSLR Viewfinder Hood
The glare off a DSLR screen in bright sunlight ruins focus pulling, and laying on the dirt to look at a fixed screen is worse. This builds a classic waist-level finder enclosure that mounts directly to the back of a Canon 650D. The mirror kicks the screen image up at 90 degrees, passing it through a top-mounted Fresnel lens, while four overlapping panels fold out to block the sun. Mechanical Details Clearance: 0.5mm on the hinge knuckles. Use a piece of 1.75mm raw filament as the hinge pin for all four folding panels. Optics: The 45° mirror tray accepts a 64x64x1.2mm flat mirror. The top frame holds a standard flexible Fresnel magnifier sheet. Both trays slide out for cleaning. Print Orientation: The parts are laid out flat in the STL. The main enclosure is rotated to print like a cup, entirely without supports. The LCD window bridge has an internal chamfer to ensure the overhang prints cleanly. Fitment: The internal dimensions match the 650D's 3:2 screen (68x46mm opening). Add a 1mm adhesive rubber gasket to the recesses on the camera face to prevent plastic-on-glass scratching.
Tapered 6x9 Speaker Packout Spacer
A tapered mounting spacer designed to fit a 6x9 speaker into the lid recess of a Milwaukee Packout compact case. The ring compensates for the natural lid tilt, ensuring the speaker sits level, and clears the internal lid structure. Footprint: 236 mm x 166 mm. Taper Profile: Slopes from 26.5 mm at the front latch side down to 10.0 mm at the rear hinges. Clearances: 38.1 mm spacing on the underside grid channels to clear standard Packout lid ribs. Hardware Interface: Slotted bolt pattern set at 166.5 mm x 118.5 mm centers with recessed head pockets.
Round Magwell Concept
A generic flared magwell concept with a circular outer profile and a standard rectangular double-stack magazine track. Outer Profile: Circular, flared cone Inner Track: Standard double-stack rectangular cutout Mounting: Rear grip plug with a horizontal retention pin hole
VW Beetle Wheel With Tire
A bare steel wheel sitting on a desk is basically a heavy paperweight waiting to scratch the finish. This adds a classic 165R15 rubber tire profile around the 1974 VW Beetle 15" rim, giving it a proper footprint so it stays put and stops dinging the furniture. Dimensions & Fit Rim Specs: 15" x 4.5J (ET34 offset, 4x130 lug pattern, 80mm bore). Tire Specs: Classic 165R15 profile, roughly 640mm overall diameter. Printing: A full-scale print of this assembly will require a massive print volume. Scale it down to use as a coaster, display piece, or RC car wheel.
Dished Lattice Dashboard Pad
A low-profile grip pad designed to keep items secure on the dashboard during sharp turns and sudden stops. Built with a gentle center depression, it encourages phones, sunglasses, and loose change to settle inward rather than spilling off the edges into the footwell when navigating roundabouts or braking. Diamond lattice surface: Provides fine-grained traction for smooth items. Dished profile: Recessed center counteracts momentum to keep items contained. Solid rim: Encloses the textured grid and maintains the structure of the 120x80mm footprint. For optimal performance, print this part in a flexible filament like TPU to maximize surface grip against both the dashboard and the stored items.
Flush-Edge Bike Reflector Bracket
A robust, print-in-place mount for securing a 25x35mm front-facing bike reflector to a 12.5mm handlebar. Designed for maximum structural integrity, the mount prints entirely on its side. This orientation aligns the extrusion paths parallel to the flexing motion of the C-clamp, ensuring it can safely snap over the bar without delaminating. The clamp itself is shifted flush with the bottom edge of the mounting plate, allowing the entire assembly to sit perfectly flat on the print bed without requiring supports. Design Notes Glued Mount: The front plate features intentionally sharp 90-degree edges to perfectly frame the reflector while providing a flawless adhesion surface. All other exterior edges are softened. Hardware: The clamping mechanism accepts a standard M4x15mm screw and hex nut. Orientation: Prints as provided. The hex nut recess is oriented to bridge cleanly across the top flat.
Apache 3800 to VD-8 Speaker Spacer
Spacer ring designed to adapt a VD-8 speaker to an Apache 3800 waterproof case. This maps the flat 217mm outer flange of the VD-8 directly onto the ribbed exterior of the Apache 3800 lid. Fitment Specs Speaker Bore: 191mm (190mm + 1mm clearance). Bolt Pattern: 203.5mm bolt circle with eight 4.5mm holes. Countersinks are 8mm diameter and 2mm deep to keep hardware flush. Case Mating: Relief cuts on the bottom face clear the stock Apache ribs (spaced 42mm x 44mm). Cutouts are drafted to 2.8mm wide and 3.2mm deep. Thickness: 12.0mm overall standoff. Note: The rib relief pattern is centered perfectly on the speaker bore. If you mount this off-center on the Apache lid, the ribs will bind.
Ruggedized Kicker Contour Spacer 4800 grid
A 6mm custom spacer for mounting a Kicker 47KBRW10 10-inch passive radiator inside an Apache 4800 equipment case. Features precision cutouts tailored to the exact internal ribs of the Apache case, allowing the spacer to sit flush without modifying the box itself. 271.8mm outer diameter / 233.4mm inner cutout. 8-hole mounting pattern on a 252mm circle. 3mm rounded channels above and below the center axes. 1/4-inch stepped reliefs along the outer edges for the bottom 3mm only.
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