A method is described for pre-fracturing rock using two or more counter-propagating millimeter-waveor microwave beams aimed at the same target volume from opposite sides. Standing-waveinterference and overlapping absorption produce interior thermal-stress concentrations that initiatecracks at much lower bulk energy density than vaporization-based drilling, while the symmetricgeometry largely cancels the net momentum imparted to the rock face. The architecture is intendedprimarily for low-gravity surface drilling on the Moon, Mars, and asteroids — where reaction-forcebudgets are extremely limited — and as a pre-conditioning step for terrestrial mechanical drills. Thedisclosure covers the baseline two-beam geometry at 100 GHz, lower-frequency variants (10–30 GHzand below) that trade hotspot resolution for deeper penetration into thicker rock, and multi-beamvariants (four- and six-beam symmetric arrangements) that increase center-of-target energydeposition and produce three-dimensional crack-nucleation patterns. A combined two-stageembodiment uses lower-frequency beams for bulk softening and high-frequency beams for crackfinishing. The disclosure describes the geometry, the energy balance, the principal physical limits(penetration depth, mineral-loss variability, standing-wave hotspot scale, emitter aperture scaling),prior art, and a brief note on integration with the author’s earlier orbital power disclosure(HRD-PUB-2026-01, OICK). The author is not seeking patent protection and offers this disclosure tothe community to establish prior art.