i 3d printed a jig to help me weld the tabs in place....

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Tube🍂Time

i 3d printed a jig to help me weld the tabs in place. you'll see why in a bit.

Like 21 September at 15:49 | Open on mastodon.social

11 comments

Tube🍂Time

yes, the little cell goes in the round hole.

21 September at 15:49 | Open on mastodon.social

Tube🍂Time

then i put down a little 3d-printed plastic spacer, and then the first nickel strip goes on top of that.

21 September at 15:50 | Open on mastodon.social

Tube🍂Time

zappity zap! ⚡

21 September at 15:51 | Open on mastodon.social

Tube🍂Time

two cells done, now i just need to weld them all together.

21 September at 15:51 | Open on mastodon.social

Tube🍂Time replied to Tube🍂Time

now you see the trick. the first tabbed cell goes positive terminal down. the tab sticks out in the groove in the front. then the other cell gets arranged in the little trough that holds it at the correct angle.

21 September at 15:52 | Open on mastodon.social

Tube🍂Time replied to Tube🍂Time

then i bend and mush the cells together after welding, and line it up for the last cell. the trough has enough room to support 2 cells.

21 September at 15:53 | Open on mastodon.social

Tube🍂Time replied to Tube🍂Time

i didn't grab a photo of me welding the solder tabs, but it's a similar process. lastly i put a length of heat shrink over the whole thing to hold it all together and insulate it. sadly the precut length of heat shrink is just a tiny bit short. oh well.

21 September at 15:55 | Open on mastodon.social

drewelmore replied to Tube🍂Time

@tubetime Very cool! But what did you use for a disclaimer? :-P

21 September at 15:56 | Open on mastodon.sdf.org

Tube🍂Time replied to Tube🍂Time

quick fit check, and it works! these cells have a button on the end that is 1mm longer than the original, so i had to flip the battery pack around to get it to fit.