Comment by specialist

My impression is Quaise's maser (?) drill thingie would be used for granite. Which is increasingly a challenge for geothermal (going deeper, longer).

Can types of drill bits (heads?) be swapped out? So use the super diamond bit to get started, then switch to Quaise's maser once you reach granite.

Just guessing. Am noob. Am just trying to follow along.

eg Most recent Volts podcast episode: An update on advanced geothermal w/ Tim Latimer of Fervo Energy.