help designing gimmick capacitor

Shorter than the calculating power of your meager brain, boy.

Zenith made them from two pieces of magnet wire which was wrapped with a thin piece of thread. That was dipped into a thin glue to hold it in place. Then the pieces were cut a little longer than needed, to allow trimming to the exact value needed. Then, one end was dipped into a solder pot to tin the leads. They used millions of them in tube type TV sets.

You could manage .3 with the empty tank alone.

Because applying the lid changed the value. Duh.

That air gap is so big that even local electrostatic fields would f*ck with it.

Can you back that up with calculations using believable numbers?

Plagiarism from an earlier post aside, you are on the verge of offering some legitimate advice. But your delivery sucks more than a vacuum. Maybe you have a black hole. You should look into that. Literally.

He most certainly does deserve a dirt nap. So do you.