Quote Originally Posted by crobird View Post
The only thing I see is the output hold doesn't connect to the cavity for the electronics, so I think I need to drill that connection. I've marked the spot where I think I need to do this in one of the pictures.
If the hole for the jack is there you only need a big enough hole for a single core shielded wire so 6.5mm (1/4") will be plenty

As for the Octopus pic, maybe this one from Roger Dean ( sorry won't attach as a pic )

https://www.rogerdean.com/product/oc...artsits-proof/