How to build a Tesla coil at home- Rethinking my Choices 🫪, Any advice would be appreciated 👍

Rethinking my choices 🫪. I need to rethink my rotary spark gap, and how to mount it in my cabinet. Do you think I am being cheap about the ring?. £90-£130 for a one inch wide circle ⭕ to be cut out ?. #advice #please #teslacoil