Purchased from independent craftsmen who specialize in assembly. This is the most common route for those without electrical engineering skills.

Groups like "Lyme-Coil" or "Doug Coil Machine Users" often have members selling used machines. Warning: Always verify the "switch bank" and capacitor health on used units. ⚖️ 4. Essential Evaluation Checklist

There is no "Amazon" for Doug Coils. You must contact builders directly or look through specialized health communities: