Mechanical
Gear Generator by Koolm
Spur, ring, bevel, crown and worm gears plus racks, all from one MakerWorld form
13 generators · 12 free
Gears, Knobs & Parts
Replacement knobs, spur gears, pulleys, threaded caps, springs and brackets: mechanical parts are all about exact numbers. These generators take the tooth count, the shaft size or the thread pitch and produce a part that fits.
Print functional parts in PETG or PLA with extra walls, and add heat-set inserts where screws go in and out.
Mechanical
Screw Generator by Koolm
Metric and inch screws, nuts and washers with real thread specs, made on MakerWorld
Mechanical
Spring Generator by Koolm
Compression springs with variable pitch, dead coils and flat ends, ready to print
Mechanical
Flat Hinges Generator
Customizable flat hinges that open to 360 degrees and print without supports
Mechanical
Parametric Electronics Panel Generator
Front panels with cutouts for switches, USB, fans and displays, plus labels
Mechanical
Pulley Generator by Koolm
Timing belt pulleys for GT2, HTD, MXL, XL and T-series belts with custom bores
Mechanical
Threaded Lid Generator
Replacement screw-on caps for jars and bottles from four simple measurements
Mechanical
D Shaft Knob Generator
Custom knobs for D-shaft potentiometers and encoders with an indicator line
Mechanical
Evolvent Design 3D Gear Generator
Spur gear generator from a gear specialist; STL download unlocked via Patreon
Storage
Underware 2.0 Cable Management Customizer
Made-to-measure cable channels for under desks and Multiboard, built on MakerWorld
Boxes
Parametric PCB Enclosure Generator
Enter your board size and holes, get a printable electronics case with lid
Missing a mechanical generator? Suggest it and we will check it out.
Printing mechanical: what to buy
The generator does the design. These materials make the print look as good as the preview.
PETG for functional and outdoor prints
PETG handles heat, sunlight and repeated flexing better than PLA, so Gridfinity bins in a hot garage or signs mounted outdoors keep their shape.
- Bambu Lab PETG BasicUpgraded formula that Bambu says matches PLA Basic for strength while staying impact-tough; low price per spool in multi-roll bundles.
- Polymaker PETGHigh-flow replacement for PolyLite PETG: strong, low-odour and quick to print.
- Overture High Speed PETGGood-value PETG in a large colour range for functional parts in bulk.
M3 heat-set inserts and installation tips
Brass heat-set inserts give printed parts real metal threads that survive repeated screwing, and a dedicated insertion tip keeps each insert straight and flush.
- ruthex M3 threaded inserts RX-M3x5.7 (100 pcs)Brass inserts made for 3D-printed plastic, with matching ruthex soldering-tip sets.
- CNC Kitchen Heat Set Insert M3 x 5.7 (100 pcs)Double-knurled, lead-free brass; CNC Kitchen also sells an installation tip set for T18/900M irons.
- Bambu Lab Heat-Stake Nut Tool Tip SetInsertion tips with an optional USB-C soldering-iron bundle; pairs with Bambu's M3 brass inserts.
M3 screw assortment
M3 is the default fastener size for printed enclosures, hinges and mounts; a sorted kit of lengths saves a hardware-store trip whenever a model calls for bolts.
- Bambu Lab Fastener KitMixed self-tapping and machine screws with nuts, matched to Maker's Supply projects.
- Hilitchi M3 socket head cap screw assortment kitClassic boxed M3 assortment with nuts and washers in many lengths.
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