Battery Soldering, Super Hot !!! From Car Glow Plugs

Make super hot soldering iron powered 20V cordless drill battery and car car glow plugs with heat that can be adjusted / regulated by yourself.
Parts:
1. 20 Volt car glow plug
2. 20 Volt Cordless Drill Battery
3. 15A PWM Speed Controller
4. Battery Socket Adapter
5. DC voltmeter
6. Switch
7. Socket GX12
8. Used Solder Casing
9. 6mm Copper Rod
10. 6mm stainless pipe
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