# Key Points from #hplusroadmap IRC Logs

• Participants discussed predatory open-access publishing practices, highlighting scammers creating fake academic journals that charge high author fees, including examples of Nigerian publishers being cut off by ISPs for spamming.

• The group shared resources on nanotechnology, including a high-resolution compressed archive of Drexler's "Nanosystems" book, while noting the delayed publication of Drexler's promised follow-up works on diamond mechanosynthesis.

• EXPAR (Exponential Amplification Reaction) was highlighted as a technique from 2003 that combines nicking enzymes with polymerase for isothermal DNA amplification, with a PNAS paper link provided.

• The "Constructable" free-hand laser cutting system was shared, which functions as an interactive drafting table allowing users to draw directly on workpieces with a hand-held laser pointer while the system implements cuts with a high-powered laser.

• Participants discussed repurposing old MakerBot MK4 Plastruder hardware into plastic welding guns, demonstrating the community's interest in modifying existing technology for new fabrication methods.

• The "3Doodler" pen was mentioned as a handheld 3D printing device that allows users to draw three-dimensional objects, though it didn't generate significant interest for crowdfunding among the participants.