Alternative methods and solutions

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[1] Electric equipment and the future to come

[2] Making charcoal.

[3] Continual post treatment?

[4] cheap water pumping

[5] please critique my solar ideas

[6] Headlight Hack

[7] Practicality of wood gas electricity.

[8] oil mist in air, best way to exhaust?

[9] helping out a buddy.

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