Description
Bring heavy-duty construction power to your RC collection. This detailed 1:14 scale AF D4 RC bulldozer is inspired by the iconic CAT D4 and designed specifically for 3D printing. With full remote-control functionality — tracked drive and a moving blade — it is both a challenging and a rewarding build.
Most parts print support-free. The model is organized into clear assembly sections, and the download includes a calibration STL for a perfect fit — drop an MR128ZZ bearing into the test part; it should fit with slight resistance. Note: the tracks have adjustable tension — check the manual.
A full step-by-step build manual is available on our Build Manuals page.
| Scale | 1:14 |
|---|---|
| Drive | Tracked · 2× geared motor |
| Blade | Servo-actuated |
| Printer | FDM · 0.4 mm nozzle |
| Min. bed | 20 × 20 × 20 cm |
| Filament | PLA or PETG |
| Layer height | 0.2 mm |
| Infill | 30%+ |
| Walls | 3 or more |
| Supports | Most parts support-free |
What's in the download
- All STL files, organized by function
- Detailed assembly guide
- Complete hardware list (screws, electronics, mechanics)
| Part | Qty | Buy on: |
|---|---|---|
| M2 x 4 mm screw DIN 965 (Countersunk Head) | 198 pcs | |
| M2 x 12 mm screw DIN 912 | 4 pcs | |
| M2 x 14 mm screw DIN 912 | 3 pcs | |
| M3 x 6 mm screw DIN 912 | 4 pcs | |
| M3 x 6 mm screw ISO 10642 | 8 pcs | |
| M3 x 8 mm screw DIN 912 | 8 pcs | |
| M3 x 10 mm screw DIN 912 | 12 pcs | |
| M3 x 12 mm screw DIN 912 | 2 pcs | |
| M3 x 14 mm screw DIN 912 | 17 pcs | |
| M3 x 16 mm screw DIN 912 | 9 pcs | |
| M3 x 16 mm screw ISO 10642 | 79 pcs | |
| M3 x 18 mm screw DIN 912 | 2 pcs | |
| M3 x 20 mm screw DIN 912 | 23 pcs | |
| M2 nut | 201 pcs | |
| M3 nut | 154 pcs | |
| 4 x 1 mm magnet | 28 pcs | |
| 3 mm LED | 8 pcs | |
| 2835 SMD LED | 8 pcs | |
| 4010 fan | 1 pc | |
| MR128ZZ 12x8x3.5 mm bearing | 2 pcs | |
| Linear actuator 21 mm stroke 50mms 12V | 2 pcs | |
| Linear actuator 30 mm stroke 50mms 12V | 2 pcs | |
| 6 mm flange shaft coupling | 2 pcs | |
| JGY370 55 rpm / 12V motor | 2 pcs | |
| Brushed ESC ~30A | 6 pcs | |
| Li-Po battery 2000 mah 3S | 1 pc |
These build parts aren't sold in my store — links go to external marketplaces (affiliate).
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