# Key Points from #hplusroadmap IRC Conversation

• The Parameterized Action Representation (PAR) system developed at UPenn by Norman Badler's team was discussed as a technology that automates maintenance instructions and can generate procedural text in multiple languages using lexicalized tree-adjoining grammars.

• DIY metal casting techniques were extensively discussed, including references to Dave Gingery's book series on building metalworking shops from scrap, Chvorinov's rule for calculating solidification time, and lost foam casting as an alternative to traditional sand casting methods.

• Participants shared resources on microfluidics fabrication capabilities, including photolithography techniques, grayscale lithography, and the potential use of borosilicate glass for DIY applications.

• Several electronics simulation tools were highlighted, particularly Falstad's circuit simulator (http://falstad.com/circuit/), which was noted as being used by the Open Farm Tech project.

• The conversation explored laboratory automation with a shared link to pipetting robotics code (http://jcline.svn.sourceforge.net/viewvc/jcline/laboratory-robots-tecan/), demonstrating interest in open-source scientific instrumentation.

• A debate occurred about optimal short-distance campus transportation solutions, comparing bicycles, electric scooters, power skates, and DIY electric/gas bicycle conversion kits based on security, convenience, and practicality.

• STEP-NC was mentioned as a universal machine tool control standard, reflecting interest in standardized manufacturing interfaces that could operate across different types of equipment.