How to Use Graphite to Electronically Heat Glass Tubes

Graphite conducts electricity and turns current into heat. Wrap or coat a zone with graphite, then power it carefully.

Basics

• Use a low-voltage DC supply with current control
• Place temperature sensors near the heated zone
• Insulate supports to protect from heat and shorts

Wear eye protection and heat-proof gloves. Work in a ventilated area and avoid flammable materials.