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#ToolOfTheDay: If you 3D print, you probably know that trying to sand or grind PLA is futile: it just melts and gums up. Well (as happens more often than you’d think) the beauty industry has got dis. A nail sculpting burr and pneumatic drill allows finessing PLA fits w/ no clogs! 
JST connectors can be a pain to disassemble. Screwdriver, tweezers and scalpels all work, if you don’t mind the odd stab wound. A set of connector shims is much better but even then it’s not obvious which tool to use. Here’s how I use the two-prong tool for JSTs. #ToolOfTheDay
Whoops I forgot to do #ToolOfTheDay yesterday. USB ammeters. Has that battery really got the capacity it says it does? How long will $GADGET run on one battery charge? Don’t guess (and for the love of Gaia, don’t believe the manufacturer!): MEASURE.
