• Wikipedia:
  • wire binding
  • coil binding
  • proclick
• Four Features of a Good Manual Twin Loop Wire Closer

specific stores

• MyBinding.com
• binding.com

specific products (coil binding)

• 4:1 punches
  • Akiles RubiCoil 11" 4:1
  • Akiles 13" Heavy Duty Coilmac M 41
• coil supplies
  • @Amazon
• crimping pliers
  • Oregon Lamination
  • Lamination Depot

specific products (wire binding)

• 3:1 punches
  • PaperMonster WB6 (cheap)
  • GBC ProClick P50 (cheap)
  • Tamerica TW-3100

protips

• if you can go with 3:1 size for coils, your punch can work with both coil-binding and wire-binding
  • this is a little less common, but they're certainly available

extreme DIY

• punch each hole individually, hand-wind the coil