Universal Replacement Bump Knob for Chinese Brush Cutter

This 3D printable replacement bump knob is designed for a generic Chinese brush cutter with a bump-feed trimmer head.

The model was created by measuring the original part and successfully tested on my own brush cutter. It is optimized for FDM 3D printing, requires no supports, and is easy to print.

Features:

• Replacement bump knob for a generic Chinese brush cutter

• Optimized for FDM/FFF 3D printing

• No supports required

• Durable design

• STL and 3MF files included

• Tested on a Bambu Lab A1 Mini

Recommended Print Settings:

• Material: PETG

• Layer Height: 0.20 mm

• Walls (Perimeters): 3

• Infill: 60% Gyroid

• Supports: Not required

• Nozzle: 0.4 mm

Compatibility:

This model is intended for a generic Chinese brush cutter with a bump-feed trimmer head. Since dimensions may vary between manufacturers, please compare all critical dimensions with your original part before printing.