In this learning activity you'll review safety considerations for using hydraulic press brakes.

This document gives the student a text and graphic overview of screw threads and fasteners.

Students view a video that shows the correct methods for starting a GTAW weld pool and adding filler. It focuses on the two problems that many students have – adding filler too soon and angling the torch so that the filler melts prematurely on the filler rod. Note: This activity is 3.6 mb.

This screencast shows the symbols used to represent the type of pulse required at the clock input to activate flip-flops.