# Key Points from #hplusroadmap IRC Discussions

- Users shared vacuum pipe engineering resources, including a calculator at checalc.com for determining appropriate pipe thickness in vacuum applications, demonstrating the channel's focus on practical DIY engineering.

- The discussion featured significant SETI content, including Jason Wright's presentation on "Artifact SETI" focusing on waste heat and alien megastructures, which was transcribed and added to the DIY H+ wiki.

- Participants critiqued traditional SETI approaches, suggesting that searching for megastructures rather than communication signals might be more effective, with specific mention of KIC 8462852 (Tabby's Star) as changing this paradigm.

- A research paper on opportunistic SETI using the Murchison Widefield Array was shared (arxiv.org/abs/1607.08818), indicating the group's interest in cutting-edge astronomical research methods.

- The existence of a specialized megastructure mailing list was mentioned, revealing the niche but active communities focused on theoretical large-scale engineering projects.

- Matrioshka brains (nested computational structures built around stars) were referenced in the context of deployment timelines, showing the channel's engagement with advanced concepts in computational megastructures.

- A participant noted success ordering custom glassware from Aliexpress, suggesting practical DIY science applications and resource-sharing among biohackers in the community.