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Drill-Powered Caulk Gun with Gear Reducer
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A modular caulk/silicone dispenser powered by a drill, featuring a gear-reduction mechanism and two mounting variants
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Model information
- Source
- Printables
- Category
- Tools
- License
- Creative Commons — Attribution — Share Alike
This is a drill-powered caulk gun with a compound gear mechanism that translates rotary motion into a strong linear push.
The model includes two drill mounting options:
- A-type: Clamp-on mount for secure tightening
- B-type: Snap-fit quick attachment
Key features:
- The main rod uses a trapezoidal/threaded power screw that holds axial load efficiently
- The plunger is printed horizontally to ensure strength along the layers
- Gears, reducer housing, and piston are best printed in PETG and manually fitted for smoother motion
- All other parts can be printed with PLA
- Use M3x5x5 heat-set inserts (or smaller if needed) and M3 screws in sizes 8, 10, 12, 16, or 20mm — whatever you have at hand
- Thick grease is recommended for the gear train and threaded shaft
Print settings recommendations:
- Infill pattern: Gyroid, 10–25% (not critical)
- Wall count: Increase perimeter count for strength (I used 4) — that's what really matters
- Top/bottom layers: Consider increasing for additional structural integrity
STEP and F3D files are included to tweak dimensions if needed for your printer tolerances.
Related model: https://www.printables.com/model/1062157-electric-silicon-dispencer