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92 3D printable adapters and couplers you can make to your measurements

Hose, vacuum, tripod and thread adapters between two standards. 75 of them have a ready-made model you can open free in a free account (no card) and resize in the viewer; the others are built from their prompt with AI (2 credits per request). Downloads (STL, 3MF or G-code sliced for your printer) use credits: 75 credits for $5 once, no subscription.
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Ready-made adapters and couplers you can open free (75)

Canon EOS R6 hot shoe dual cold shoe bar, 3D printable partOpens free
Canon EOS R6 hot shoe dual cold shoe barA T-shaped bar that slides into the hot shoe of a Canon EOS R6, R6 Mark II or R50 and offers two cold shoes side by side, so a Rode VideoMic GO II and a smal…
DJI Action 5 Pro chest-mount adapter, 3D printable partOpens free
DJI Action 5 Pro chest-mount adapterAn adapter that puts a DJI Action 5 Pro (about 42 × 33 × 33 mm with the frame) onto a standard 3-prong GoPro chest mount.
DJI Mic 2 receiver cold-shoe hood, 3D printable partOpens free
DJI Mic 2 receiver cold-shoe hoodA hood that shades a Mic 2 receiver screen on a cold shoe, 40 × 30 × 18 mm.
DJI Mini 4 Pro landing gear extensions clip-on, 3D printable partOpens free
DJI Mini 4 Pro landing gear extensions clip-onA set of four clip-on leg extensions for the DJI Mini 4 Pro and Mini 3 Pro that raise the airframe 35 mm so the downward vision sensors and gimbal stay out o…
Dust-port adapter 36 mm to 27 mm Festool, 3D printable partOpens free
Dust-port adapter 36 mm to 27 mm FestoolA stepped adapter from a 36 mm shop-vac cuff to a 27 mm Festool hose with 0.2 mm tapers so both sides stay put.
Godox V1 flash foot stand with 1/4 inch thread, 3D printable partOpens free
Godox V1 flash foot stand with 1/4 inch threadA replacement mini stand for a Godox V1, V860III or TT685 speedlight that has lost the plastic foot it shipped with.
GoPro Hero 13 bite-mount spacer, 3D printable partOpens free
GoPro Hero 13 bite-mount spacerA 8 mm spacer that moves a Hero 13 off a bite mount so the Media Mod does not hit your chin.
GoPro Hero 13 Media Mod cold-shoe bar, 3D printable partOpens free
GoPro Hero 13 Media Mod cold-shoe barA dual cold-shoe bar that bolts onto a GoPro Hero 13 Media Mod (about 80 mm wide) so a wireless mic and a light sit on the same axis.
Insta360 X5 invisible-selfie adapter, 3D printable partOpens free
Insta360 X5 invisible-selfie adapterAn adapter that puts an X5 on a 1/4-20 selfie stick at the official invisible-selfie angle, 15 degrees.
JOBY GorillaPod 3K phone saddle, 3D printable partOpens free
JOBY GorillaPod 3K phone saddleA saddle that puts a 70–85 mm phone on a GorillaPod 3K ball head with a 1/4-20 insert.
Manfrotto 200PL plate to Arca-Swiss dovetail adapter, 3D printable partOpens free
Manfrotto 200PL plate to Arca-Swiss dovetail adapterA block that screws to the bottom of a Manfrotto 200PL or 200PL-PRO quick-release plate and gives it a 38 mm Arca-Swiss dovetail, so a camera that lives on a…
Ortlieb Ultimate 6 bar adapter 31.8 mm, 3D printable partOpens free
Ortlieb Ultimate 6 bar adapter 31.8 mmAn adapter that lets an Ultimate 6 mount clamp a 31.8 mm bar instead of the 25.4 it assumes, 4 mm shim pair.
Peak Design Bike Mount to GoPro adapter, 3D printable partOpens free
Peak Design Bike Mount to GoPro adapterAn adapter that puts a GoPro 3-prong under a Peak Design Bike Mount so a light and a phone share the bar.
Peak Design Capture clip backing plate for thin straps, 3D printable partOpens free
Peak Design Capture clip backing plate for thin strapsA spacer plate that sits behind a Peak Design Capture V3 clip so it clamps firmly onto thin backpack straps, seatbelt-style webbing or a 20 mm MOLLE row that…
Peak Design Capture v3 to Arca adapter, 3D printable partOpens free
Peak Design Capture v3 to Arca adapterAn adapter that puts Capture v3 on an Arca rail, 38 mm dovetail and the official Capture hole.
Peak Design Travel Tripod phone clamp, 3D printable partOpens free
Peak Design Travel Tripod phone clampA clamp that puts a 70–85 mm phone on a Travel Tripod's cold shoe, 12 mm shoe and a 1/4-20 backup.
Quad Lock Pro 22.2 mm handlebar spacer, 3D printable partOpens free
Quad Lock Pro 22.2 mm handlebar spacerA 4 mm spacer that lets a Quad Lock Pro clamp sit on a 22.2 mm bar without crushing the sleeve.
Rode Wireless GO II receiver cold shoe cradle, 3D printable partOpens free
Rode Wireless GO II receiver cold shoe cradleA cradle that fixes a Rode Wireless GO II receiver, which is 44 x 45.3 x 18.5 mm, onto the hot shoe of a Sony A7 IV, Canon EOS R6 or Fujifilm X-T5 without re…
RØDE Wireless ME dual cold-shoe sled, 3D printable partOpens free
RØDE Wireless ME dual cold-shoe sledA sled that holds two Wireless ME transmitters on one camera shoe, 70 × 18 × 12 mm with two ISO 518 pockets.
Shure SM7B to 3/8 inch mic arm adapter, 3D printable partOpens free
Shure SM7B to 3/8 inch mic arm adapterA threaded adapter that lets a Shure SM7B or SM7dB yoke, which has a 5/8-27 female thread, screw onto a boom arm that only offers a 3/8-16 male stud, such as…
Sony A7 IV Arca-Swiss plate with anti-twist lip, 3D printable partOpens free
Sony A7 IV Arca-Swiss plate with anti-twist lipA camera-specific Arca-Swiss plate for the Sony A7 IV, A7R V and A7C II that cannot rotate on the 1/4-20 tripod socket because a 4 mm lip hooks the rear edge…
Sony ZV-E10 II cage with Arca plate, 3D printable partOpens free
Sony ZV-E10 II cage with Arca plateA three-sided cage for a Sony ZV-E10 II (about 121 × 68 × 54 mm body) with a 38 mm Arca-Swiss dovetail on the base, a cold shoe on top, and cutouts for the f…
SwitchBot Blind Tilt rod adapter 6 mm, 3D printable partOpens free
SwitchBot Blind Tilt rod adapter 6 mmAn adapter that lets a SwitchBot Blind Tilt drive a 6 mm square tilt rod instead of the 7 mm it shipped for.
Wahoo ELEMNT ACE to Garmin quarter-turn adapter, 3D printable partOpens free
Wahoo ELEMNT ACE to Garmin quarter-turn adapterAn adapter that puts an ELEMNT ACE on a Garmin quarter-turn mount, 4 mm thick with the ACE 4-hole pattern on top.
Opens free
AA to D cell battery adapterA hollow shell the size of a D cell that carries a single AA battery, letting you run a lantern, radio or toy on the smaller cells you already have.
Opens free
Adapter plate to remount a PCB on a different hole patternA thin intermediate plate that lets a circuit board with one set of mounting holes attach to an enclosure or chassis drilled for another.
Opens free
Bontrager Blendr to GoPro mount adapterTrek bikes ship with Bontrager Blendr stem and bar bases that accept only Blendr accessories.
Opens free
Bosch GKS 190 circular saw dust port adapter 35 mmAn adapter that clips onto the chip ejection chute of a Bosch GKS 190 or GKS 18V-57 circular saw and gives it a 35 mm round spigot for a workshop vacuum hose.
Opens free
Broom handle thread adapter for a mismatched headA short adapter that lets a threaded broom or mop head screw onto a handle with a different thread, saving a perfectly good pole when the head is replaced.
Opens free
Bryton Rider to Garmin quarter-turn mount adapterBryton Rider 750, S500 and S800 computers use a quarter-turn foot that is close to Garmin's but not identical, so on many Garmin out-front mounts the unit fe…
Opens free
Bugaboo Fox stroller cup holder adapter clampA clamp that fixes a cup holder to the handlebar or frame of a Bugaboo Fox, Cameleon or Bee so a coffee and a water bottle ride along without dangling from a…
Opens free
Dremel Multi-Max dust extraction adapter for shop vac hoseA clip-on shroud for the Dremel Multi-Max MM50 and MM40 oscillating tools that catches dust from the sanding pad and routes it to a 32 mm vacuum hose.
Opens free
Dust extraction adapter, 35 mm tool port to 58 mm hoseA tapered adapter that connects the small 35 mm dust port on a sander or router to the 58 mm hose of a shop vacuum, so chips end up in the bin instead of on…
Opens free
Dyson V11 wand to 32 mm standard vacuum tool adapterAn adapter that clicks onto the wand or motor body of a Dyson V11, V10 or V15 and presents a standard 32 mm spigot so universal crevice tools, brush heads an…
Opens free
Elgato Key Light Air quarter inch tripod adapterAn adapter that lets an Elgato Key Light Air sit on any camera tripod or light stand instead of its own weighted desk base.
Opens free
Fan adapter, 80 mm frame to 120 mm fanA funnel-shaped shroud that fits a quieter 120 mm fan onto a case or power supply opening designed for an 80 mm fan.
Opens free
Festool CT 27 mm hose to 32 mm adapterA short adapter that lets the 27 mm anti-static hose from a Festool CT 26, CT 36 or CTL MIDI plug into 32 mm dust ports on non-Festool tools such as Makita s…
Opens free
Filament spool hub adapter for 52 mm boresA pair of hub inserts that centre a filament spool with a large 52 mm bore on a slim holder rod so it turns smoothly instead of wobbling and tangling.
Opens free
GoPro mount to Garmin quarter-turn adapter for bike lightsA puck that lets a bike light with a GoPro-style two-finger foot, such as a Knog Blinder, Exposure Strada or Magicshine, hang from a spare Garmin quarter-tur…
Opens free
Hydro Flask 21 oz bottle cage holder for bikeA cage that holds an insulated Hydro Flask 21 oz or 24 oz standard mouth bottle (73 mm diameter) on a bike, keeping coffee hot or water cold on a commute or…
Opens free
IKEA Besta cable pass-through grommet for a 60 mm holeA two-part grommet that finishes a hole drilled through the back or shelf of an IKEA Besta TV bench so HDMI and power cables pass through cleanly without che…
Opens free
IKEA Raskog cart hook and cup holder clipA clip-on accessory for the IKEA Raskog trolley that snaps over the wire rail and adds a cup holder for a drink or pen pot and a hook for scissors or headpho…
Opens free
Insta360 X3 to GoPro finger mount adapterThe Insta360 X3 and X4 use a 1/4-20 tripod thread on the base, while bike, helmet and chest mounts use the GoPro three-finger interface.
Opens free
Knog Blinder light to GoPro mount adapterKnog Blinder and Plus lights strap around a handlebar with an integrated silicone band, which means they cannot use the GoPro mount under most out-front comp…
Opens free
Lampshade reducer ring, 40 mm to 28 mm fittingA thin ring that lets a lampshade with a 40 mm European fitting sit on a lamp with a 28 mm bayonet holder, the perennial problem when shades and lamps come f…
Opens free
Lezyne bike light mount to GoPro adapterLezyne Macro Drive, Lite Drive and Micro Drive lights slide onto a small rail on their strap bracket.
Opens free
LoRa 868 MHz antenna mast clip for 25 mm poleA clip that fixes an SMA-mount 868 or 915 MHz LoRa whip antenna to a 25 mm pole so a Meshtastic or Helium node gets height and a clear view.
Opens free
MagSafe charger puck to 1/4-20 tripod mount adapterA holder that turns an Apple MagSafe charger puck (56 mm diameter, about 5.5 mm thick) into a magnetic tripod head, so an iPhone 16 Pro snaps onto any tripod…
Opens free
Makita SP6000 track saw dust port adapter 36 mmA swivel adapter for the Makita SP6000 and DSP600 18V LXT track saws that converts the saw's oval-ish 28 mm dust chute to a round 36 mm spigot for a Festool…
Opens free
Microphone stand thread adapter, 3/8 to 5/8 inchA threaded bushing that lets a European 3/8 inch microphone stand accept a US 5/8 inch 27 TPI clip or shock mount.
Opens free
Nalgene 32 oz bottle cage adapter for bikesA 32 oz Nalgene wide mouth is 89 mm across, far too fat for the 74 mm cages on a bikepacking or touring frame.
Opens free
Peak Design mobile SlimLink to 1/4-20 tripod adapterA tripod adapter for Peak Design Everyday cases and Universal adapters that reproduces the square SlimLink mounting boss and adds a 1/4-20 socket underneath…
Opens free
PopSocket base to MagSafe ring adapter plateA thin plate that takes a standard PopSocket PopGrip base on one side and a stick-on MagSafe ring on the other, so the grip snaps onto an iPhone 15, 16 or Ga…
Opens free
PVC pipe adapter, 40 mm to 50 mmA reducing coupler that connects a 40 mm PVC pipe to a 50 mm pipe for low-pressure drains, dust collection or a garden gravity feed.
Opens free
Quad Lock to 1/4-20 tripod adapter plateA disc that screws onto any tripod, gimbal or selfie stick with a standard 1/4-20 thread and carries a Quad Lock style twist recess, so a phone in a Quad Loc…
Opens free
Quad Lock to Peak Design SlimLink adapter plateAn adapter puck with a Quad Lock style four-lug pattern on one face and a Peak Design SlimLink style square boss on the other, so a phone in a Peak Design Ev…
Opens free
Raspberry Pi 5 USB-C power cable strain relief bootA snap-on boot that supports the USB-C plug of the official Raspberry Pi 27 W power supply where it meets the Pi 5, preventing the wiggle that causes undervo…
Opens free
Raspberry Pi 5 VESA 100 mount adapter plateA plate that hangs a Raspberry Pi 5 on the back of a monitor using the 100 x 100 mm VESA holes, turning a screen into a compact desktop or kiosk.
Opens free
Raspberry Pi Camera Module 3 GoPro mount adapterAn adapter that puts a Raspberry Pi Camera Module 3 on any GoPro-style mount, giving access to hundreds of clamps, suction cups and helmet mounts.
Opens free
Rigid shaft coupler, 5 mm to 8 mmA rigid coupling that joins a 5 mm motor shaft to an 8 mm lead screw or output shaft in low-torque projects such as small linear stages or slow turntables.
Opens free
Rokform RokLock to MagSafe ring adapter discA disc that twists into a Rokform RokLock mount and presents a MagSafe magnet ring on its face, so an iPhone 16 or any MagSafe phone without a Rokform case c…
Opens free
Samsung Galaxy Buds 3 Pro adapter insert for AirPods standsA padding insert that lets the Samsung Galaxy Buds 3 Pro case (58.9 x 48.7 x 24.4 mm) sit in stands and docks cut for the AirPods Pro 2 case (60.6 x 45.2 x 2…
Opens free
Shelly 1 Mini Gen3 DIN rail adapter clipA clip that mounts a Shelly 1 Mini Gen3 relay onto a standard 35 mm top-hat DIN rail inside a consumer unit or junction box.
Opens free
Shop-Vac 2.5 inch hose to 35 mm tool dust adapterA stepped reducer that joins a Shop-Vac, Craftsman or Ridgid 2.5 inch (63.5 mm OD) hose end to the 35 mm dust port found on most European sanders and track s…
Opens free
Shower caddy hook adapter for a 19 mm shower railAn adapter that lets an over-the-showerhead caddy from Simplehuman, OXO or IKEA hang from the vertical riser rail instead, when the shower head is too low or…
Opens free
SP Connect SPC+ to Quad Lock mount adapterAn adapter disc that lets a phone in an SP Connect SPC+ case ride on Quad Lock bike, motorbike and car mounts, or the other way round if you flip the descrip…
Opens free
Speaker stand pole adapter, 35 mm socketA cup that fits over a 35 mm speaker stand pole and provides a flat top with screw holes for a monitor speaker or small light that lacks a pole socket.
Opens free
Square to round duct adapter, 100 mmA transition piece that connects a 100 mm round ventilation hose to a 110 x 110 mm square wall grille or fan housing, common in bathroom extract fans and sma…
Opens free
Tesla Model Y cup holder adapter for large water bottlesA sleeve that drops into one of the Tesla Model Y or Model 3 console cup holders, which are about 75 mm across and 70 mm deep, and widens the opening to 90 m…
Opens free
Thule roof rack T-track adapter for bike carrierThule WingBar and WingBar Evo bars have a 20 x 20 mm T-track along the top, and older bike carriers, ski racks or DIY kayak saddles that clamp around a squar…
Opens free
Tube reducer sleeve, 25 mm to 22 mmA stepped sleeve that lets a 22 mm tube plug into the end of a 25 mm tube, useful for extending a curtain pole, joining two lengths of aluminium tubing or fi…
Opens free
UniFi Flex Mini switch DIN rail adapterAn adapter that clips a Ubiquiti UniFi Flex Mini five-port switch onto a 35 mm DIN rail inside a network cabinet or smart home panel.
Opens free
Vacuum hose adapter, 32 mm to 35 mmA stepped sleeve that joins a 32 mm vacuum hose end to a 35 mm attachment, one of the most common mismatches between cleaner brands.
Opens free
VESA adapter plate, 75 mm to 100 mmA flat plate that lets a monitor with a 75 x 75 mm VESA pattern hang on an arm or wall mount built for 100 x 100 mm.
Opens free
Wahoo ELEMNT Roam adapter for Garmin quarter-turn mountsA Wahoo ELEMNT Roam or Bolt will physically lock into a Garmin quarter-turn mount, but Wahoo's tabs are rotated 90 degrees so the screen ends up sideways.

More adapters and couplers, built from the prompt (17)

No ready-made model yet: sign in and SpeakCAD builds the part from its example prompt, to your measurements (2 credits per AI request). The live demo is free if you want to try the editor first.
Bambu Lab AMS cardboard spool rim ringsA pair of rim rings that clip onto a 200 mm cardboard spool so it rolls on the AMS rollers without shedding paper dust or slipping.
Bosch GKS 18V track dust-port adapterAn adapter from a GKS 18V-68 GC dust port (about 35 mm) to a 27 mm Festool or 36 mm shop-vac hose.
Cold shoe to GoPro finger adapterAn adapter that turns any camera or cage cold shoe into a GoPro-style mount for a small light, action camera or wireless receiver.
Creality CFS cardboard spool rim ringsRim rings that clip over the flanges of a 200 mm cardboard spool so it turns cleanly on the rollers of a Creality CFS instead of slipping and leaving dust.
Fidlock TWIST bottle-base spacerA 8 mm spacer that sits under a Fidlock TWIST base so a 590 ml bottle clears a down-tube boss or shock.
Filament dry box hygrometer bezelA bezel that holds a small digital hygrometer (the common rectangular type, about 48 × 28 × 15 mm) in the lid or wall of a filament dry box, so you can read…
Filament dry box PTFE pass-through with PC4-M10An airtight pass-through that lets a 4 mm PTFE tube leave a filament dry box and feed an AMS lite, a Prusa MK4S or any printer without letting humidity back in.
Ford F-150 14th gen cup holder tumbler adapterAn adapter that sits in a 2021 or later F-150 console cup holder and holds a big 40 oz tumbler or 1.2 litre bottle upright.
GoPro Hero 13 to 1/4-20 tripod adapterAn adapter that puts a GoPro Hero 13 Black (71.8 × 50.8 × 33.6 mm) on any tripod or phone clamp with a 1/4-20 screw.
Motorcycle intercom helmet clamp shimA shim that fills the gap between a Sena or Cardo clamp-style intercom mount and a thin helmet shell, so the unit stops rocking at speed.
Motorcycle mirror extender riser M10A riser that lifts a motorcycle mirror 30 mm higher so the rider sees past their own elbows.
RAM AMPS to GoPro three-prong adapterA plate that bolts to the AMPS hole pattern of a RAM round base (four holes on a 30 × 38 mm rectangle) and turns it into a three-prong GoPro mount.
RAM B-size ball M10 mirror bolt adapterA 1 inch (25.4 mm) B-size ball on a base that clamps under a motorcycle mirror, so a RAM double-socket arm and phone cradle mount without a handlebar clamp.
Shop-Vac 2-1/2 inch hose to 1-1/4 inch accessory adapterA reducer that lets a 2-1/2 inch Shop-Vac or Craftsman hose use 1-1/4 inch accessories.
Shop-Vac 2-1/2 inch hose to 4 inch dust port adapterAn adapter that connects a 2-1/2 inch shop vacuum hose to a tool with a 4 inch dust port, such as a table saw or bandsaw.
Topeak Ninja Master+ cage adapterAn adapter that puts a Ninja Master+ CO2/tool pouch on a bottle-cage boss pair when the official mount does not fit a sloping tube.
VW Golf 8 cup holder bottle adapterAn adapter that plugs into a Golf 8 front cup holder and widens it for a 1 litre sports bottle or a 90 mm tumbler.

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