Sophomore Engineering Clinic LAB Tool/Method, Day 1: 4 Oct 12

1. Mr. Kostetskyy, Dr. Pillay , dr. von Lockette – Fall 2012 Sophomore Engineering Clinic LABTool/Method, Day 1: 4 Oct 12

2. Safety in ME department machine shop and projects lab • Assignment 3 – User Manual • Apparatus to use • Timeframe Outline

3. Machine Shop vs. Projects Lab • Shop hours are 9AM – 9PM • Use of the machine shop equipment outside of these hours is not permitted without express consent of Chuck Linderman. • Projects Lab hours are building hours. • Use of the projects lab outside of these hours requires permission faculty, the department chair, and/or the dean of the college of engineering. Lab access

4. Working in the shop/projects lab requires that users wear clothing that does not interfere with their work and helps protect them from abrasions and caustic liquids. • For example, open-toed shoes and shorts are not to be worn in the projects lab area. • Additionally, no loose clothing, neck ties, or jewelry is to be worn in the machine shop area. • Also, hair should be worn at a length that does not endanger the student. Personal hygiene

5. Safety glasses are to be worn at all times when working in the shop and while using tools in the lab area. • Glasses are stored in containers on the wall at the entrances to the labs. • Gloves are to be worn when handling most chemicals and when handling hot materials. • Contact instructors regarding location of any protective equipment that is needed Personal Protective Equipment (PPE)

6. When disposing of liquids other than water, please contact Chuck Linderman for appropriate procedures. • Under no circumstances may solvents, organics, or metals be emptied into the sink drains. • Solvents and caustic materials are housed in segregated storage. Please ensure they are returned there if found there. Chemical Handling, Storage and Disposal Procedures

7. It is not unusual for electrical cords to become damaged or worn. When this is the case, report it to the ME technician. • Electrical equipment and outlets are spark sources. It is important to keep this in mind when working with chemicals that produce flammable vapors. Electrical safety

8. Rowan Hall has audible emergency alarm, which when sounded, requires everyone to exit the building via the nearest exit, using the staircases if necessary and not the elevators. • In the event of laboratory fire, different measures may be taken. However, the most important concern is your personal safety. • If a fire is contained in a hood, dry chemical extinguishers are to be used and are available in the front of each lab. These are class “B” extinguishers, filled with sodium bicarbonate and intended to be used on chemical fires. They may also be used on electrical fires. • In the event of a trashcan fire, class “A” water extinguishers are available in the hallway. Emergency procedures

9. If the laboratory fire cannot be contained or arrested, leave the lab and pull the general alarm in the hall. • Remain a safe distance away, but in the area if possible, so that you may direct the responders when they arrive. • In the event of a spill, notify the MechE technician who will initiate proper spill cleanup procedures. • If any of these conditions happen after hours, call Public Safety at 4911 from a university phone or 256-4911 from your cell phone. Emergency procedures

10. Learn how to safely and effectively use a Rowan asset • Document procedure • Due Thursday, 25 October, at or before 800 • One report from each team • Profs. Patricia Egbert and von Lockette will inform you of the submission procedure • (20%) Users’ Manual – Team Assignment • (w/ clear citation of individual contribution) Assignment 3 – User Manual

11. Each team will work with the laser cutter • Not used only by MechEs Assignment 3 – User Manual

12. Laser cutter removes material by melting and/or vaporization • Versatile creation of planar structures • Can be used on most polymers and thin wooden sheets Laser Cutter

13. Cutting depth depends on material melting point, heat of vaporization, and speed of translation • Parameters must be set dependent on type of material used and type of cut desired http://alumni.media.mit.edu/~yarin/laser/physics.html Laser Cutter

14. Demonstration: ME experts will show how to use the machine • Fact finding: research the operation of the machine using online and in-house resources • Trial Configuration: sign up to practice using the machine in 20 minute blocks (see von Lockette) • Operational Demonstration: fabricate the trial piece during class appointment (see von Lockette); finalize writing Schedule and Tasks

15. Compulsories • Cut from provided stock material • Must be 1” by 2” overall • Must contain circular cutout of predetermined size. Note the cutout size must correspond to an available dowel pin size. • The location of the hole is arbitrary. The centered, quarter inch marking is only a suggestion for a key-chain. • Optionals • Etching • Asymmetric cutouts • Multiple cutouts • Text and/or graphics ¼” 2” 1/2” 1/2” The trial piece

16. Your manual should … • begin assuming you have a CAD file prepared already, but you must discuss acceptable file formats, • discuss only optionals used, • give brief introduction of how laser cutting works, • give list of acceptable and unacceptable materials tailored to Rowan engineering usage, • address safety concerns and emergency procedures. Notes on writing assignment

17. http://www.achart.ca/articles/publications/words10.htm • http://www.referenceforbusiness.com/encyclopedia/Gov-Inc/Handbooks-and-Manuals.html • Your textbook has a chapter on writing procedures • Tebeaux, Ch. 10 • Beer, Ch. 5 Other resources