AF D4 bulldozer 1:14 RC

1:14 Scale AF D4 RC Bulldozer – 3D Printable Model

Bring heavy-duty construction power to your RC collection!
This detailed 1:14 scale RC bulldozer 3D printable model is inspired by the iconic CAT D4 and designed specifically for 3D printing enthusiasts and RC hobbyists.
With full remote-control functionality — including tracked drive and a moving blade — this project offers both a challenging and rewarding build experience.

Optimized for FDM 3D printers with a 0.4 mm nozzle and a minimum 20×20×20 cm bed size.
Most parts print support-free.
The model is organized into clear assembly sections for easy navigation, and the download package includes a calibration STL to ensure a perfect fit.

NOTE, the model has the ability to adjust the tension of the tracks – check manual!

📹 See the bulldozer in action!

https://go.angryflite.com/xmhtq
https://go.angryflite.com/z4k52
https://go.angryflite.com/mskj1
https://go.angryflite.com/a2mzn

The download package includes:

• All STL files organized by function
• A detailed assembly guide
• A complete hardware list (screws, electronics, and mechanics)

Print it, build it, bring it to life! 🛠️🚜

Before You Start

Printer Calibration

• Before starting the print, make sure your printer is properly calibrated.
• In the ZIP package, you will find a file named test_part.stl – place a MR128ZZ bearing into it.
• The bearing should fit with a slight resistance. If it does, your printer is well-calibrated.

Print Settings

• Printer Type: FDM, 0.4 mm nozzle
• Minimum Bed Size: 20×20×20 cm
• Filament: PLA or PETG
• Layer Height: 0.2 mm
• Infill: Minimum 30% (any pattern)
• Wall Count: At least 3 walls
• Supports: Most parts do not require supports

Print Quantity

• The instruction includes information on how many pieces of each part to print.
• Files that need to be printed multiple times include a multiplier in the file name, e.g., C004_x2.stl – print 2 pieces of this part.

File Categories

• The files are grouped into 5 sections based on their placement in the model: Base section, Engine section, Blade section, Cabin section, Tracks section
• Each part in the ZIP archive has a unique identifier, which corresponds with those mentioned in the instructions.

Assembly Notes

• Some parts need to be glued together.
• Use CA glue (cyanoacrylate) or any universal adhesive – parts requiring glue are clearly marked in the instructions.

I wish you tons of fun during the build – and even more once the model is complete!

Online build manual: https://manuals.angryflite.com/en/af-d4-bulldozer-1-14-rc

Bill of Materials:

Part name	Quantity	AliExpress
M2 x 4 mm screw DIN 965	198 pcs	https://s.click.aliexpress.com/e/_omegdD5
M2 x 12 mm screw DIN 912	4 pcs	https://s.click.aliexpress.com/e/_olcWIon
M2 x 14 mm screw DIN 912	3 pcs	https://s.click.aliexpress.com/e/_olcWIon
M3 x 6 mm screw DIN 912	4 pcs	https://s.click.aliexpress.com/e/_oDr3uYn
M3 x 6 mm screw ISO 10642	8 pcs	https://s.click.aliexpress.com/e/_oltsEx5
M3 x 8 mm screw DIN 912	8 pcs	https://s.click.aliexpress.com/e/_oDr3uYn
M3 x 10 mm screw DIN 912	12 pcs	https://s.click.aliexpress.com/e/_oDr3uYn
M3 x 12 mm screw DIN 912	2 pcs	https://s.click.aliexpress.com/e/_oDr3uYn
M3 x 14 mm screw DIN 912	17 pcs	https://s.click.aliexpress.com/e/_oDr3uYn
M3 x 16 mm screw DIN 912	9 pcs	https://s.click.aliexpress.com/e/_oDr3uYn
M3 x 16 mm screw ISO 10642	79 pcs	https://s.click.aliexpress.com/e/_oltsEx5
M3 x 18 mm screw DIN 912	2 pcs	https://s.click.aliexpress.com/e/_oDr3uYn
M3 x 20 mm screw DIN 912	23 pcs	https://s.click.aliexpress.com/e/_oDr3uYn
M2 nut	201 pcs	https://s.click.aliexpress.com/e/_onS4C0B
M3 nut	154 pcs	https://s.click.aliexpress.com/e/_onlyJ43
4 x 1 mm magnet	28 pcs	https://s.click.aliexpress.com/e/_ol4GXFp
3 mm LED	8 pcs	https://s.click.aliexpress.com/e/_omsg9yj
2835 SMD LED	8 pcs (alternatively)	https://s.click.aliexpress.com/e/_oCeqF0j
4010 fan	1 pc	https://s.click.aliexpress.com/e/_oDsy5cb
MR128ZZ 12x8x3.5 mm bearing	2 pcs	https://s.click.aliexpress.com/e/_oEARlzl
Linear actuator 21 mm stroke 30mms 12V	2 pcs	https://s.click.aliexpress.com/e/_oppBfIX
Linear actuator 30 mm stroke 30mms 12V	2 pcs	https://s.click.aliexpress.com/e/_oppBfIX
6 mm flange shaft coupling	2 pcs	https://s.click.aliexpress.com/e/_okNqYuP
JGY370 40 rpm / 12V motor	2 pcs	https://s.click.aliexpress.com/e/_oEO09d5
Brushed ESC ~30A	6 pcs	https://s.click.aliexpress.com/e/_op7aMHZ
Li-Po battery 2000 mah 3S	1 pc	https://s.click.aliexpress.com/e/_oC9LsH1

ZIP package includes:
– STL files
– Build manual

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Update: 29.06.2025
– added the ability to adjust the tension of the tracks

Update: 9.04.2025
– Release

LICENSE:

What you can:

• Print STL files as many times as you want
• Modify and upgrade files for your own use

What you can’t:

• Sell STL files
• Print and sell the product as your own
• Use these files commercially
• Share the files with third parties (share only the store link)