Popular fittings

Common sizes, ready to open. Each one starts the free designer with these dimensions; change anything and export 3MF, STL or STEP for your printer.

Common sizes

• 100 mm to 4 inch duct adapterJoin metric 100 mm duct to 4 inch (101.6 mm) hose. Free 3D printable adapter you can resize, then export as 3MF, STL or STEP.
• Shop vac 2.5 inch to 35 mm hose adapterConnect a 2.5 inch shop vacuum hose to a 35 mm power tool dust port. Free 3D printable adapter, every dimension adjustable.
• 4 inch Y splitterA 3D printable 4 inch dust collection Y fitting. Change each branch size and angle independently, then export 3MF, STL or STEP.
• 100 mm 90° elbowA swept 90 degree elbow for 100 mm duct and hose. Adjust bend radius and end sizes, then export 3MF, STL or native STEP.
• 4 inch 90° elbowA swept 4 inch 90 degree elbow for dust collection hose and pipe. Free, adjustable, export 3MF, STL or STEP.
• 100 mm 45° elbowA gentle 45 degree swept elbow for 100 mm duct. Free 3D printable, every dimension adjustable.
• 100 mm T junctionA 3D printable 100 mm T fitting with an independently sized side branch. Export 3MF, STL or native STEP.
• 3D printer enclosure exhaust, 100 mmVent a 3D printer enclosure into 100 mm hose: a rectangular bolt-on flange that transitions to a barbed hose end. Free and adjustable.
• Window exhaust insertA 3D printable window insert with a 100 mm hose outlet, perimeter rim and mounting holes. Size the panel to your window.
• 100 mm magnetic hose couplingA 3D printable 100 mm magnetic quick disconnect: two matching halves with recessed pockets for disc magnets. Free and adjustable.
• 2.5 inch magnetic shop vac couplingQuick-disconnect a 2.5 inch shop vac hose with magnets. Two printable halves with real magnet pockets; resize to any hose.
• 100 mm blast gateA 3D printable 100 mm sliding blast gate: housing and separate blade, held with standard bolts. Export 3MF, STL or STEP.
• 4 inch blast gateA 3D printable 4 inch blast gate with a separate sliding blade and bolt-on retainers. Free, adjustable, export 3MF, STL or STEP.
• 4 inch to 2.5 inch reducerConnect 4 inch dust collection to 2.5 inch shop vac hose with a gradual 3D printable reducer. Every dimension adjustable.
• 6 inch to 4 inch reducerA 3D printable 6 inch to 4 inch duct reducer for dust collectors, fans and exhaust. Free, adjustable, export 3MF, STL or STEP.
• 150 mm to 100 mm reducerA 3D printable 150 mm to 100 mm duct reducer for inline fans, extraction and ventilation. Every dimension adjustable.
• 125 mm to 100 mm reducerA 3D printable 125 mm to 100 mm duct reducer for inline fans and ventilation hose. Free and fully adjustable.
• Laser cutter exhaust adapterA 3D printable laser cutter exhaust adapter: 150 mm flanged duct to 100 mm hose barb. Resize it to your machine.
• Round to rectangular duct adapterLoft a round hose into a rectangular duct or opening. Set any diameter, width and height, then export 3MF, STL or STEP.
• 120 mm fan to 100 mm duct adapterBolt a 120 mm PC fan to 100 mm hose. 3D printable shroud with 105 mm hole spacing and a barbed hose end.
• Shop vac hose barb adapterA 3D printable barbed hose adapter for vacuum and dust hose. Adjust barb height, count and both ends.
• 4 inch end capA 3D printable 4 inch end cap with adjustable bore, depth and fit clearance. Free, export 3MF, STL or STEP.

Every part in the library

Splitters

• Y splitter for duct and hoseA 3D printable Y splitter with one inlet and two independently sized branches. Set every size and angle, then export 3MF, STL or STEP.
• T junction for duct and hoseA main duct with a perpendicular, independently sized side branch. Free 3D printable tee, export 3MF, STL or STEP.
• Gated Y splitterDirect flow to either branch with separate printable sliding valves. Free 3D printable gated Y, any size.
• Four-way crossFour ports, four sizes and independent angles. A free 3D printable duct cross, export 3MF, STL or STEP.
• Three-way manifoldFeed three branches from one inlet. A free 3D printable manifold with every branch sized independently.

Adapters

• Duct and hose reducerA concentric reducer between any two hose or duct sizes, in mm or inches. Free 3D printable, export 3MF, STL or STEP.
• Straight duct couplerJoin two round, oval or rectangular ducts end to end. A free 3D printable coupler with every dimension adjustable.
• Round to rectangle adapterLoft a round inlet into a fully adjustable rectangular outlet. Free 3D printable, export 3MF, STL or STEP.
• Offset (eccentric) reducerAn eccentric reducer with independent outlet offsets, for runs that must stay flat against a wall or floor.
• Barbed hose adapterAdjustable retaining barbs, engagement length and hose fit. Free 3D printable hose barb for vacuum and dust hose.
• Bolt-on duct flangeA mounting flange with a configurable bolt pattern and through holes, transitioning to a hose. Free and adjustable.
• Oval duct adapterLow-profile oval ducting with independent width and height. Free 3D printable adapter, export 3MF, STL or STEP.
• Twist-lock plugAn original three-lug bayonet plug with its complementary socket included. Free 3D printable quick connect.
• Twist-lock socketA three-channel bayonet socket with adjustable fit clearance. Free 3D printable quick connect.
• Rectangular duct reducerIndependent rectangular end profiles for low-clearance duct runs. Free 3D printable reducer.

Elbows

• 90° elbowA swept 90 degree elbow with adjustable bend radius and end sizes. Free 3D printable, export 3MF, STL or native STEP.
• 45° elbowA gentle 45 degree swept elbow. Free 3D printable, every dimension adjustable, export 3MF, STL or STEP.
• Swept S offsetA smooth offset between parallel ends with a continuously swept airway. Free 3D printable.
• 180° return bendA true semicircular return with independently sized ends. Free 3D printable duct U-bend.
• Rectangular duct elbowA swept rectangular duct bend with editable width, height and bend radius. Free 3D printable.
• Reducing elbowChange size while turning a corner, using a curved internal path. Free 3D printable duct elbow.
• Low-profile oval elbowAn oval swept bend for installations with limited height. Free 3D printable, every dimension adjustable.

Magnetic

• Magnetic hose couplingA magnetic quick disconnect with recessed magnet pockets and a matching hose half. Free 3D printable, any hose size.
• Radial magnet cuffMagnet pockets cut radially into a circular collar. A free 3D printable magnetic hose cuff, any size.
• Ring magnet couplingA continuous annular recess for a ring magnet, with configurable width and depth. Free 3D printable coupling.
• Magnetic Y splitterTool-free branch swaps with independently configured magnetic flanges. Free 3D printable Y, any hose size.
• Reducing magnetic pairA machine-mounted magnetic interface with a smaller linked hose half. Free 3D printable.
• Sealed magnetic pairA locating spigot, matching recess and O-ring seat, with both magnetic halves included. Free 3D printable.

Valves

• Sliding blast gateA housing and separate sliding blade, retained with standard bolts. Free 3D printable blast gate for any duct size.
• Butterfly damperA separate rotating disc and shaft with a manual handle. Free 3D printable damper for duct and hose.
• End capA removable cap with configurable bore, depth and end thickness. Free 3D printable, any size.
• Gated T junctionA through duct with a removable-cover slide gate on its side branch. Free 3D printable.
• Dual butterfly YA Y with independent removable-cover butterfly dampers and flat printable discs. Free 3D printable.
• Blanking flangeA closed cover with a configurable bolt flange for unused duct openings. Free 3D printable.
• Backdraft flapA separately printed gravity flap, captive hinge and hard opening stop. Free 3D printable.
• One-handle Y selectorA captured rotary core selects either outlet while keeping a common inlet connected. Free 3D printable.
• Six-leaf regulating irisSix separate leaves, fixed pivots and a slotted drive ring form a working iris. Free 3D printable.

Exhaust

• Window exhaust insertA window insert with perimeter rim, mounting holes and a hose outlet. Size the panel to your window and print it.
• Printer enclosure ventA rectangular enclosure flange transitioning to a hose connection. Free 3D printable vent, any size.
• Laser exhaust adapterLarge duct to smaller hose, with a mounting flange. Free 3D printable adapter for laser cutters and engravers.
• Dual-port window panelTwo independently sized exhaust outlets on one configurable window panel. Free 3D printable.
• Saddle take-offA curved saddle that seats on an existing round duct, with a hollow branch and real mounting holes.
• Wall pass-throughAn extended wall sleeve with a screw flange and hose insertion shoulder. Free 3D printable.
• Square fan adapterA square fan flange with 105 mm bolt spacing (120 mm fans), transitioning to a hose. Free and adjustable.
• Weather hood and louversA downward-facing exhaust hood with a separate louver and screen cartridge. Free 3D printable.
• Modular window systemA tiled window frame with replaceable hose, blank, cable, filter and weather modules. Free 3D printable.

Nozzles

• Crevice nozzleReach tight spaces with a long, narrow rectangular tip. Free 3D printable crevice tool for any vacuum hose.
• Wide fan nozzleSpread airflow across an adjustable wide slot. Free 3D printable nozzle for blowers and vacuums.
• Blower jet nozzleA round converging nozzle with an adjustable exit bore. Free 3D printable jet for blowers and fans.
• Bellmouth pickupA flared capture hood with a smooth circular transition. Free 3D printable pickup for dust and fume extraction.
• Rectangular capture hoodA broad rectangular pickup tapering into a round extraction hose. Free 3D printable hood.
• Floor pickup nozzleA shallow, wide vacuum opening with an offset round hose connection. Free 3D printable floor nozzle.
• Oval air knifeA thin oval outlet for a broad blowing stream. Free 3D printable air knife for blowers.
• CNC dust shoeA spindle-clearance hood with a separately replaceable brush-strip carrier. Free 3D printable.

Experimental

• The octopus manifoldSix radial branches and one inlet; each branch can point in three dimensions. Free 3D printable manifold.
• Off-axis Y junctionAn asymmetric, three-dimensional junction for awkward spaces. Free 3D printable, every angle adjustable.
• Build your own fittingStart from a port graph and add up to eight independent ports. Design an unusual 3D printable fitting.
• Six-axis manifoldIndependent branches on all six spatial axes. A free 3D printable manifold, every port adjustable.
• Articulated pickup armSplit retainers capture hollow spherical joints; adjust each segment independently. Free 3D printable.
• Poseable vacuum octopusA manifold with independently aimed captive pickup arms and interchangeable tips. Free 3D printable.
• Bench-edge cleanup railA bench-mounted pickup manifold with independently captive shutoffs. Free 3D printable.

Mounts & service

• Split hose supportTwo bolted clamp halves, a wall stand-off and a separate flexible liner. Free 3D printable hose hanger.
• Hinged cleanout accessA straight-through access section with a captive hinged lid and locking latch. Free 3D printable.
• Split repair sleeveWrap-around bolted halves and sealing liners for an existing duct. Free 3D printable repair.
• Pressure and sensor tapA flush airway opening and an independent tubing spigot for a pressure instrument. Free 3D printable.
• Captive filter cassetteAn accessible media carrier with closed retaining slots and a separate clamp frame. Free 3D printable.
• Custom flange gasketA flexible sealing sheet linked to the actual opening and bolt pattern. Free 3D printable gasket.
• Magnetic nozzle parking dockAn angled mounting dock and a hose ring with indexed magnet pockets. Free 3D printable.

Motion & service

• Captive swivel couplingA full-turn hose joint captured by a bolted retaining ring, with seal seats. Free 3D printable.
• Locking telescopic couplerA sliding sleeve with positive extension stops and a retained thumb-nut lock. Free 3D printable.

Workshop

• Foot-pedal cleanup stationA floor pickup with a spring-return gate and guided foot pedal, linked by purchased cable. Free 3D printable.
• Indexed nozzle turretA rotating tool wheel with replaceable nozzles, a fixed hose feed and a positive index lock. Free 3D printable.
• Six-face service plenumHose ports, slot arrays and blank faces around a sealed frame with a captive hinged hatch. Free 3D printable.
• Serviceable chip trapHose adapters, a removable inlet downcomer, an inspection window and a dumping floor. Free 3D printable.

Need another size?

These are starting points. Every port in the designer can be any size, profile or connection.