Came out nice, but I am not sure Coriann will hold up to the heat that the insulators get up to.Had a couple of wet days so spent some time in the shop.
A set and 2 spares of plugs for the engine.
Used Corian for the insulators. Read it was difficult to machine? Had no trouble.
They're 1/4 - 32 thread.
View attachment 457594
Thanks for looking
Greg