Wire Bending CNC

Precise wire bending CNC machine for wires at 1mm and less in diameter.

Current version: 1.1 (2019-09-29)

Goal:

• build a simple wire bending machine that is easily createable by other makers
• capable of making sharp bends with millimeter precision
• most of the parts 3D printed
• using common parts and fasteners easily and cheaply purchasable

Use:

• jewelry making, electronics, art ...

Parts required

3D printed parts (STL files)

• Bender
  • Tool Head
  • Motor Frame
• Feeder
  • Motor frame
  • Bottom frame
  • Wire guide
  • Idler gear carriage
  • Idler gear spacer
  • Feeding gear spacer
  • Bending plate (template)
• Straightener rollers (2x)
  • Bed frame (2x)
  • Top gears frame (2x)
  • Roller (14x)
• Spool holder

Screws & bolts

• 3x16 wood screw (16x)
• M3x10 hex-socket bolt (4x)
• M3x12 hex-socket bolt (18x)
• M3x20 hex-socket bolt (6x)
• M3x40 hex-socket bolt (4x)
• M3 nut (10x)
• M3 washer (14x)

Electronics

• Arduino UNO
• CNC shield kit for Arduino UNO
• A4988 stepper driver (included in CNC shield kit) (2x)
• NEMA17 stepper motor / 17HS8401 (2x)
• 12V 3A power supply adapter
• Jumpers (6x)

Bearings & Other

• Welding Machine Feeding gear V-grove (30mm diameter)
• Small steel spring 4x6mm
• Bearing 3x10x4mm
• Bearing 6x15x4mm
• 6mm steel rod
• 2mm thick small sheet of steel for bending plate (optional)
• Wood board for a base (minimal size - 450x100mm)

How to build it

Full tutorial available on instructables.com.