Nice job. One minor niggle. Please get some decent cells and recycle those brc cells, their bloody useless in single cell applications and bloody dangerous in series.
Looks like a tin of shoe polish, painted in Liverpool colours. I'm also waiting for my metalwork arriving from China (tried a baccy tin and it fell off the desk and landed on the atty which shorted the 510 causing the battery holders spring to compress permanently)so once the new metal gets here I'll also have new 510 and battery holders. Couple of hours drilling /soldering and that's that
Sent by lazer from just north of the world's largest nuclear dustbin