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  • 2.4kWh DIY Powerwall From Recycled 18650 Lithium-ion Laptop Batteries

    Do you set up the batteries to have similar capacities per section? or do you just randomly match them up?

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  • Hi, sorry I didn't see the questions earlier, I haven't visited in a while. In case it's still relevant, I'll answer them. The system I built lasted as long as the machine was in use, probably because the rubber of binocular caps is a very stiff one. Silicone might be too soft and widen the hole with use.Like I said in the instructions, start small, and work up with the size until the steam pressure is enough to push the water through.The worst that would happen if too much pressure builds up would be that the rubber pressure seal will rupture, resulting in a huge spurt of coffee into the cup. Also possible, if you remove the PF immediately after making the coffee, is some pressure might remain, resulting in a bit of flying coffee grounds. I made that mistake at the beginning, it's not te…

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    Hi, sorry I didn't see the questions earlier, I haven't visited in a while. In case it's still relevant, I'll answer them. The system I built lasted as long as the machine was in use, probably because the rubber of binocular caps is a very stiff one. Silicone might be too soft and widen the hole with use.Like I said in the instructions, start small, and work up with the size until the steam pressure is enough to push the water through.The worst that would happen if too much pressure builds up would be that the rubber pressure seal will rupture, resulting in a huge spurt of coffee into the cup. Also possible, if you remove the PF immediately after making the coffee, is some pressure might remain, resulting in a bit of flying coffee grounds. I made that mistake at the beginning, it's not terrible.

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  • mhippo commented on mhippo's instructable Star Trek Voyager Uniform

    True, but there are some places which are more sane about it...To make an "authentic" looking uniform you need to invest ~50+ hours of work, and need a lot more skill.

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