Nút Chạm (Bump Knob) Thay Thế Cho Đầu Máy Cắt Cỏ

Replacement Bump Knob for Chinese Brush Cutter

This is a replacement bump knob designed for a generic Chinese brush cutter / string trimmer head.

The model was created from the original part and tested on my own brush cutter. It is optimized for FDM 3D printing and prints without supports.

Recommended Print Settings

• Material: PETG

• Layer Height: 0.20 mm

• Walls: 3

• Infill: 60% (Gyroid recommended)

• Supports: Not required

Compatibility

This model is intended for a generic Chinese brush cutter head. Since many trimmer heads use different dimensions, please compare all critical measurements with your original part before printing.

Included Files

• STL

• 3MF

Notes

• Designed for FDM 3D printers.

• Tested on a Bambu Lab A1 Mini.

• PETG is recommended for improved durability and outdoor use.

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