Heads up: many models on this page are AI-generated or uploaded untested. They may be misconfigured for the intended application — check the dimensions and tolerances, and verify or edit the model before printing or relying on it.*
Print-In-Place Shade Chain Loop Tensioner
This print-in-place tensioner for roller and cellular shades has a 40 mm V-groove pulley (8 mm wide, 4 mm deep). The pulley turns on a 9 mm pin and is held in place by an overhead bridge, with 0.5 mm clearance on every mating face. Two #6 screws (4.5 mm holes) hold it to the frame: one goes through the hollow pin and one through the tab. It keeps a loose bead-chain or cord loop (up to about 5 mm) taut and close to the wall, so a worn clutch is less likely to let the shade droop and children can't pull the loop out.
Print-In-Place Rope Turning Block
A surface-mount rope pulley with a 34 mm sheave that prints in place on its own 9 mm axle post — no bearings, no assembly. The V-groove takes 5–6 mm rope (clothesline, tarp ridgeline, ceiling hoist, kayak or gate pull line) and redirects it up to 180°; the 50 x 58 mm base screws down with four M5 / #10 wood screws through 5.5 mm holes, and the capture cap keeps the rope in the groove even when the line goes slack.
Flagged: lifting or tensioned load. Not for safety-critical use without independent engineering review.
Bike Shifter Pull-Ratio Adapter Pulley
A print-in-place stepped cable pulley that converts shifter cable pull to a different derailleur pull ratio — 1.48:1 (Ø37.2 mm groove in, Ø25.2 mm groove out, or reversed for 0.68:1) so a road brifter can run an MTB derailleur. The pulley spins captive on an integral Ø8 mm axle with a 0.5 mm radial and 0.4 mm vertical clearance; each cable exits a rim notch and is pinched under an M3 screw self-tapped into a 2.6 mm hole. The 72 x 44 x 24 mm base bolts to an M5 bottle boss (5.5 mm clearance hole) or straps to a frame tube through two 8 x 2.5 mm zip-tie slots.