nogarats

Flaghole, the cell your about to build  is pretty close to the one I built
execpt my mesure were slightly higher.

My wall thickness is 1/8 and 36" long  with 8" dia.
Tubes are 1.5" and 1.25" at .064 thickness 27" long.
I used plumber gasket for spacers.

My problem is when connected in // the cell draws around 100 amps no pwm.  straight DC  --  I also get a lot of sluge
when connected in series, .8 amp but no production

Here is the

What I did was dia X3.1416 x length of the outer tube
same for the inner tube.

then subtract outer minus  inner and you should know the length to remove.  just remove a slice, because if I am not mistaking, only the full rounded portion will vibrate. not the slotted one.