Unit 11 Preparing to Weld 63 Copyright Goodheart-Willcox Co., Inc. May not be reproduced or posted to a publicly accessible website. Name ______________________________________ Date _____________ Class ____________ Check Your Progress 1. List three safety precautions that should be observed when preparing to weld. a. ___________________________________________________________________________________________________________ b. ___________________________________________________________________________________________________________ c. ___________________________________________________________________________________________________________ 2. List the two methods prescribed for striking an arc: a. ___________________________________________________________________________________________________________ b. ___________________________________________________________________________________________________________ 3. How can an electrode that has become welded fast to the work be freed? _____________________________________________________________________________________________________________ _____________________________________________________________________________________________________________ 4. Prepare a sketch showing the position of the electrode for fl at welding. 5. What is the general rule for establishing the correct length of the arc? _____________________________________________________________________________________________________________ _____________________________________________________________________________________________________________ 6. In general, the current setting for an electrode is approximately equal to the diameter of the electrode in thousandths of an inch. If this is true, what are the current settings for the following electrodes? a. 1/8″ (3 mm) ___________________________________________________________________________________________ b. 5/32″ (4 mm) __________________________________________________________________________________________ c. 3/16″ (5 mm) __________________________________________________________________________________________ d. 1/4″ (6 mm) ___________________________________________________________________________________________