# Key Technical and Conceptual Points from #hplusroadmap IRC Discussions

• Participants debated energy systems for exoskeletons, comparing hydrogen peroxide actuators (offering ~2000kJ/kg with 70% efficiency) to fuel cells, analyzing the tradeoffs between energy density, power density, and practical implementation challenges.

• The conversation distinguished between "self-replication" (single units building copies of themselves) and "hive replication" (specialized robots working collectively to expand their system), with references to academic papers on exponential growth of self-reproducing machine systems.

• Kanzure described "skdb," an ambitious "apt-get for hardware" project aimed at creating a package management system for physical components that would document manufacturing processes and identify cyclical dependencies needed for self-replicating systems.

• A solar-powered self-expanding robot system called "Auxon" was discussed, featuring robots that extract materials from soil, build rails, and use sunlight to power their network expansion through thermochemical material processing cycles.

• Participants explored open-source CAD system development, including a Python-based tool that exports to STEP format while maintaining parametric design capabilities compatible with commercial CAD packages.

• A practical transhumanist project was shared involving the acquisition of desert land to build a solar-powered forge and workshop, utilizing a large fresnel lens salvaged from a projection TV capable of melting concrete for self-sufficient manufacturing.