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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Lego style R120 Fixed Track Switch
What it's for A static, non-moving track switch designed for interlocking brick train systems. It features an R120 geometry curve diverging from a standard straight section, complete with clearance flangeways for wheelsets and bottom anti-studs for baseplate mounting. Dimensions Length: 384 mm (48 studs) Curve Radius: 960 mm (120 studs) Rail Height: 9.6 mm (above ties) Overall Height: 12.8 mm Compatibility Mates with standard brick-built train track ecosystems. Flangeways are sized to clear standard rigid wheelsets.
Feline Cranial Top Hat
Miniature top hat scaled for the cranial dome of standard domestic felines. Mates directly to the top of the head using a user-supplied elastic retention strap routed through the brim extensions. Fitment: Best suited for domestic shorthair profiles. Not verified for large breeds (e.g., Maine Coon) or flat-faced profiles. Clearance: 60mm main brim diameter. Check this measurement against the subject's ear spread before printing. Retention: Features twin 3mm anchor bores to accept standard elastic cord. Tie off on the underside of the brim.
Articulated Sim Racing Keyboard Arm
This modular arm mounts a Logitech K235 wireless keyboard to a tubular sim racing chassis, allowing you to swing the keyboard into your lap for typing and fold it away while driving. The mechanism relies on structural box-section arm segments and heavy-duty M6 bolted joints to prevent sagging and resist vibration. A split-clamp base mounts to the frame without drilling, and the central keyboard tray uses recessed neodymium magnets to keep the keyboard anchored during intense force-feedback moments. Hardware Required Cockpit Mount: 2× M5x50mm bolts & hex nuts. Articulated Pivots: 3× M6x40mm bolts, washers, & nylon lock nuts. Keyboard Retention: 4× 10x3mm circular neodymium magnets (press-fit or glued into the tray). Printing Advice Material: PETG, ABS, or ASA for rigidity and impact resistance. Orientation: Print all parts flat on the bed as laid out. The tray is designed compactly to fit comfortably on a 220x220mm print surface. Settings: Use a minimum of 4 perimeters/walls and 30%+ gyroid infill for the arm segments to ensure lateral strength.
Flat-Profile Fingerboard Deck
A classic double-kicktail mini skateboard deck, sized for standard fingerboard hardware. The baseline dimensions are a 100mm total length, 30mm width, and 2.5mm thickness, which hits the sweet spot for a standard grip feel. The mounting pattern drops right onto standard 32mm fingerboard trucks. Remixing Parameters If you take this into CAD to build your own pro-model, the key geometry hooks are: Kick Angle: Currently pitched at 22 degrees for a medium-high pop. Wheelbase: The truck centers sit 52mm apart. Concave: This base version is entirely flat across the width to print beautifully face-down without supports. Add a subtractive cylindrical sweep across the top face if you want real side-to-side concave.
ZigZagZog Bahn Railway Tile
Custom 6x6 building block tile covering bare studs with raised railway lettering. A dead-flat top piece that refuses to pop loose once seated. Footprint: 6x6 standard block pitch (47.8mm square) Clearance: 0.2mm gap tolerance for side-by-side placement Mount: Underside tubes clutch standard studs
2AeroTest — Glider Wing Comparison
A set of three flat-printed aerodynamic test gliders designed for direct side-by-side flight comparison. Built specifically to eliminate variables, all three models share an identical streamline fuselage, tail assembly, weight distribution, and a total wing planform area locked exactly at 3600 mm². The only variable is the main wing geometry. Design Geometry Total Wing Area: 3600 mm² per aircraft Wing Thickness: 0.8 mm (prints as a solid, flexible surface) Rectangular Wing: 120 mm span × 30 mm uniform chord Tapered Wing: 120 mm span, tapering from a 40 mm root to a 20 mm tip chord Delta Wing: 120 mm span, tapering from a 60 mm root to a 0 mm tip chord Print Notes These are designed as print-in-place monolithic objects. The entire flat bottom of the aircraft (wing, tail, and fuselage belly) rests on the build plate at Z=0. Because the wings are only 0.8 mm thick, they print entirely solid in 4 standard 0.2 mm layers without needing supports. For simulated dihedral, gently bend the wings upward close to the fuselage immediately after removing them from a warm build plate.
AeroFit — Micro Motor Mount
A lightweight, minimalist motor mount designed to attach micro brushless motors to a standard 3.0mm carbon fiber boom. It prints flat on the bed with no supports required, making it an extremely quick and clean print. Features Carbon Boom Sleeve: Snug 3.0mm inner diameter with a flex slit, allowing it to clamp securely to standard RC plane tail booms. Motor Interface: 9x9mm hole pattern sized for M2 screws, standard for 11xx series micro motors. Lightweight Build: Thin 1.2mm walls keep weight to an absolute minimum while the conical transition fillet maintains structural rigidity. Print Notes Print upright (motor plate flat on the bed). No supports needed. PLA or PETG recommended for stiffness.
Lego style R120 Fixed Track Switch
What it's for A static, non-moving track switch designed for interlocking brick train systems. It features an R120 geometry curve diverging from a standard straight section, complete with clearance flangeways for wheelsets and bottom anti-studs for baseplate mounting. Dimensions Length: 384 mm (48 studs) Curve Radius: 960 mm (120 studs) Rail Height: 9.6 mm (above ties) Overall Height: 12.8 mm Compatibility Mates with standard brick-built train track ecosystems. Flangeways are sized to clear standard rigid wheelsets.
Gateway Intake to Combustion Engine Adapter
Adapter connecting a 42.0 mm OD combustion engine fan spigot to a PK360 grill intake vent. Host mating: Snaps into the PK360 stadium-profile intake vent. Component mating: Accepts a 42.0 mm OD pipe (internal bore is 42.5 mm for friction fit). Clearance: Verify your fan outlet measures exactly 42.0 mm before printing.
B9 Headlight Intake Duct
What it's for A track-style air intake duct designed to replace or sit within the headlight housing of a 2017-era Audi A4 (B9 generation). It funnels incoming high-pressure air at the front of the vehicle directly into a standard 3-inch intake hose for engine or brake cooling. Dimensions Front Opening: Roughly 240mm wide by 115mm tall, shaped to mimic the aggressive outer angular profile and bottom notch of the B9 headlight. Hose Outlet: 76.2mm (3 inches) outer diameter, standard for silicone intake hosing. Overall Depth: 180mm. Wall Thickness: 2.5mm for structural rigidity under pressure. Print notes Designed as the driver-side (left) insert. Mirror the part on the X-axis in your slicer if you need the passenger-side equivalent. Due to engine bay temperatures, ABS, ASA, or high-temp Nylon are strictly required; PLA or PETG will deform under load and heat. Orient the flat front face on the build plate to print like a vase, minimizing the need for internal supports. Assembly Requires removing the factory headlight assembly or cutting the lens/housing to fit. The 3-inch rear neck accepts standard hose clamps. Ensure the intake route is clear of water-ingress hazards if routing directly to the engine intake box.
OO Scale Terrace Houses Half Relief Flat Pack
What it's for A three-house flat-pack terrace kit designed for OO gauge (4mm to the foot) railway modeling. Includes a unified front facade, separate sloped end panels, a tiled roof spanning all three dwellings, and individually printed window and door inserts. The flat-pack layout ensures pristine surface details right off the build plate without relying on supports. Dimensions Total Span: 180 mm wide facade (matching standard OO scale footprints for a terrace trio). Max Height: 85 mm at the rear roof peak. Inserts: Doors scaled accurately to 26 mm tall, with classic 18 mm sash windows. Assembly The main panels feature precision 45-degree mitred edges on the front and sides for seamless corner joints. Interlocking stone quoins wrap neatly around the assembled corners. Print the window and door inserts separately, paint as desired, and secure into the recessed front facade openings.
0.355 to 0.370 Golf Ferrule
Custom transition ferrule designed to mate golf shafts with an adapting taper. Before printing, verify your shaft tip standard. This part spans from a 0.355-inch taper dimension to a 0.370-inch parallel dimension. Critical Measurements: Inner Bore (Bottom): 9.0 mm (0.355") Inner Bore (Top): 9.4 mm (0.370") Outer Diameter: 13.5 mm (0.530") constant Length: 22.0 mm (0.875") Does not fit standard parallel-only 0.370" shafts at the base without binding.
Threaded Spoke Magnet Clamp
A zero-hardware, print-in-place clamp for mounting a 10x4mm cylindrical magnet to an e-bike spoke, designed for velocity sensors. The two-piece assembly uses an M16x2 thread to clamp directly over the spoke, trapping the magnet inside the cap and requiring no glue or screws. Magnet Pocket: Sized at 10.1mm to 10.6mm taper to account for ASA shrinkage, with a direct drop-in channel. Spoke Clearance: The slot accommodates standard bicycle spokes, self-centering as the cap is tightened. Standoff: The cap body is exactly 15mm long to position the sensor face properly. Material: Designed for ASA or PETG for outdoor UV and temperature resistance. No supports needed.
TrailBase — Gladiator Tablet Dock
The TrailBase brings your digital command center directly to your Jeep Gladiator's dash. Designed to sit securely against the AC ledge, this low-profile tablet dock utilizes 3M VHB tape and a recessed magnetic pocket to keep your device locked in place over rough terrain. The open-front bezel design ensures full screen visibility while maintaining a rigid, drop-in structure for quick mounting and dismounting on the trail. Features Secure Stance: Deep bottom ledge maximizes adhesion surface for 3M mounting tape above the AC vents. Magnetic Retention: Rear block houses a flush rectangular magnet pocket for supplemental pull. Cable Ready: Open bottom channel allows for continuous charging while docked. Drop-in Slot: Tolerance-optimized rails make inserting and removing the tablet seamless.
N Gauge tram Depot
A heavily customised three-road tram shed for N gauge model railways. This version features a widened bay footprint, and a shortened four-window depth. Model Features Proportions: Reduced length to better fit cramped layout boards while widening the roads to accommodate broader rolling stock profiles. Support-free Roof: The internal 45-degree gables mean the ceiling prints entirely without internal supports, despite the flat false-front parapet. Print Notes Fine architectural textures like stone blockwork or corrugated iron sheets aren't baked into the geometry to keep the slice time manageable and polygon counts sane. We recommend using your slicer's 'fuzzy skin' feature for a stucco/stone effect on the walls, or applying thin patterned styrene sheets to the shell after printing.
Riverine Paddlewheel Sweeper Drone
A twin-hull survey drone designed for sweeping up surface debris. This robust catamaran frame features deep catchment nets, dedicated solar mounts, and powerful rear paddlewheels for shallow-water maneuverability. Features Catamaran Hulls: Meter-long twin pontoons for maximum stability. Deep Collection Basket: Underslung mesh netting to trap floating items. Rear Paddlewheels: Flat-blade side drives designed to chew through weeds and debris without tangling. Sensor Suite: Tall mast and recessed tray sized perfectly for a standard solar panel.
Red Planet Rover Chassis
A fully articulated, print-in-place scale model capturing the iconic six-wheel stance of off-world explorers. The design relies on the famous rocker-bogie suspension geometry, allowing the wheels to ride over uneven terrain while keeping the main chassis relatively stable. It prints entirely assembled as a single piece. Print Guidelines Clearance: Designed with 0.4mm gaps on all articulating joints. Orientation: Prints directly on its wheels. Support: No supports required. The internal axle caps are conical to bridge cleanly. Post-Processing: Gently work each wheel and pivot arm free after taking it off the bed to break away any tiny stringing inside the joints.
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.
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.
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