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A comment on You can have geothermal power everywhere if you drill deep enough. Parent comment

Re:You can have geothermal power everywhere if you drill dee... by mkl on Saturday February 26, 2022 @03:44AM (#30476140)
> Let's assume (and I don't know since I don't work for these guys but we need numbers if we're going to guess at things) that their "drilling" with microwaves technology leaves behind a 12" diameter hole that is > 6 miles deep. And we can drill two of those holes in such a way that they meet at their maximum depth. I'm imagining holes that start on the surface 100+ yards (or meters) apart drilled with a slight angle to meet when they are 6+ miles deep.

I'm doubtful that any drilling process can be that straight and accurate unless straight lines are inherent in the drilling process (e.g. lasers somehow). Just think of how much trouble they had drilling to those stranded Chilean miners to rescue them, only 700m down: https://en.wikipedia.org/wiki/2010_Copiap%C3%B3_mining_accid...

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Re:You can have geothermal power everywhere if you drill dee... by ChuckMcM on Saturday February 26, 2022 @04:16AM (#30476266)
That is entirely fair. And per @animats comment it isn't clear they have managed to do anything "new" yet.

That said, microwaves (like lasers) do tend to go straight. So from the point they start using them going forward, I would expect it to be possible (not easy, but possible) to keep them in a straight path.

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Re:You can have geothermal power everywhere if you drill dee... by marcosdumay on Saturday February 26, 2022 @10:52AM (#30478552)
> That said, microwaves (like lasers) do tend to go straight.

Actually, none of them do. Cutting equipment (even after adapted to drilling) is heavily focused on the near region, usually a few cm away. On distances larger than a few cm, they are no more self-aligning than any mechanical drill.

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