Rotary Fixture
Print Profile(1)
Bill of Materials
Description
Optimized prints. Clean CAD. Complete drawings. Modular T-slot accessories for engineers who care about complete design packages.
This is a compact rotary fixture designed for precise, controlled manipulation of small parts during processing and assembly. The rack-and-pinion drive enables smooth, repeatable 360° rotation, while the modular T-slot base allows flexible positioning and quick adjustment. Ideal for applications requiring consistent access around cylindrical or irregular components. The design supports easy part fixturing and stable hands-free operation on a desktop setup.
Using thrust bearings & pullies are to give some preload to the fixture so it doesn't rattle. The setup can work perfectly well without either but the rotation will not be as smooth.
Recommended Print Settings
Material: PLA
Layer Height: 0.2 mm
Wall Loops: 2+
Infill: 15%
Supports: None needed
Build Instructions to Follow:
Hardware used:
2020 T-slot Aluminum Extrusion: T-Slotted Framing, Single Four Slot Rail, Silver, 20 mm Square, Solid | McMaster-Carr
3 x 6in. & 1 x 9in. extrusions
Brass Rod: Ultra-Formable 260 Brass, Rod, 300mm Long, 4mm Diameter | McMaster-Carr
This needs to be cut to 250mm
M5 Screw with 8mm length: T-Slotted Framing, End-Feed Nut and M5 Thread Button Head for 20 mm High Rail | McMaster-Carr
Gear/Pinion: 20 Degree Pressure Angle Plastic Gear, Round Bore, 0.8 Module, 60 Teeth | McMaster-Carr
Rack:20 Degree Pressure Angle Gear Rack, 0.8 Module | McMaster-Carr
Steel Rod: Hardened Undersized High-Speed M2 Tool Steel Rod, 8 mm Diameter, 4-1/2" Long | McMaster-Carr
Thrust Bearing x2: Thrust Ball Bearing, Steel, for 6 mm Shaft Diameter, 14 mm OD, 4.92 mm Thick | McMaster-Carr
M6 Nut x 4: Corrosion-Resistant 18-8 Stainless Steel Hex Nut, M6 x 1 mm Thread Size | McMaster-Carr
Coupling Nut: Low-Strength Steel Coupling Nut, Zinc-Plated, M6 x 1 mm Thread | McMaster-Carr
Threaded Rod: 18-8 Stainless Steel Threaded Rod, M6 x 1 mm Thread Size, 100 mm Long | McMaster-Carr
Socket Head Screw: Socket Head Captive Panel Screw, M5 x 0.8 mm Thread, 20 mm Long | McMaster-Carr
Included Models for Other Projects
Corner Bracket (2020): Gusset Bracket (2020) - Free 3D Print Model - MakerWorld
End Cap (2020): End Cap (2020) - Free 3D Print Model - MakerWorld
License
You shall not share, sub-license, sell, rent, host, transfer, or distribute in any way the digital or 3D printed versions of this object, nor any other derivative work of this object in its digital or physical format (including - but not limited to - remixes of this object, and hosting on other digital platforms). The objects may not be used without permission in any way whatsoever in which you charge money, or collect fees.
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