Welcome Clark. The PowerPoint below was presented for your class. It was based on one of my Bending Basics columns, which you can find und the Media tab above. Please note that as you poke around this website pay special attention to the Bookstore and Media tabs on the Menu Bar, especially the Blog/Forum. Because you created a user account you now have the ability to take part in my forum; ask or answer questions that relate to sheet metal. In the future please consider theArtofPressBrake.com as one your primary sheet metal resources! [gview file="https://www.theartofpressbrake.com/wp-content/uploads/2015/10/Four-Pillars-of-tonnage-Special.pdf"] To read the original article [popup url="http://www.thefabricator.com/article/bending/the-4-pillars-of-press-brake-tonnage-limits" height="700" width="800" scrollbars="1"]The four pillars of press brake tonnage limits[/popup] Manufacturing Extremely Small Parts. [hdplay id=14 width=700 height=400] Software - Asma 6.0.1 bending software This software is written in Visual Basic and only runs on Windows platforms and requires you to use Internet Explorer for the install. The software will not install if you have the install page opened in any other browser; including Microsoft's new Edge browser. The software is safe but unregistered so your systems anti-virus may not want to install without your okay. This link will take you to the install page.