Gadget Freak Case # 265: Propane – Oxygen Cannon & Shock Tube Demonstrator This project is an experiment in generating supersonic shock waves. Nov 07, 2014 Watch This Webinar NULL TAGS: Maker/Gadget Freak Automation 0 comments Hide comments user not logged in Comment * Switch to plain text editorMore information about text formats Text format CommentsPlain text CommentsAllowed HTML tags: <em> <strong> <blockquote> <br> <p>Plain textNo HTML tags allowed.Web page addresses and e-mail addresses turn into links automatically.Lines and paragraphs break automatically. PublishLog in or register to comment Save Leave this field blank Related You Might Like Load More