Date September 3rd 2021 To Dr Mahdi Norouzi From Adam Brew Subject or Title 1st lab and review of safety rules The first piece of equipment that was talked about was the hood vent where the use of chemicals is used to take the chemical vapors so the vapors are not breathed in The next piece of equipment was the belt sander which is used to remove material from a sample using sander paper and in the case of this lab 80 grit sandpaper The safety used with the belt sander is to use gloves when using this or in the case of this lab due to the smaller nature of the sample is to keep your hands higher on the sample and to wear safety glasses for eye protection The next piece of equipment is the LECO PR 32 mounting press which was used to mount the sample into Bakelite by applying pressure and heat to the sample the safety associated with this equipment is to make sure that the mounting press is set up right to mount a sample The next piece of equipment is the microscope which was used to take photomicrographs of the sample at each stage of grinding and polishing to see the microstructure of the sample given this piece of equipment has no real safety hazard but need to be used carefully to ensure that the microscope is not damaged in use The last piece of equipment that was talked about was the LECO SS 100 Spectrum system automatic grinder and polisher which is used along with diamond pastes to polish the surface of the sample beyond what the sandpaper will remove to get a surface with no scratches or imperfections The top ten safety rules that applied to this lab where as follows First is that the safety glasses must be worn any time a student operates a lathe milling machine drilling machine grinding wheel a power saw or a cut off saw Second is while machining a specimen to not touch moving or rotating parts Third is that a student must familiarize themselves with the locations of the emergency switch buttons on machines and in the lab which can used to cut off electric circuits in laboratory rooms except the lights Fourth is only properly trained and certified student are to operate a machine or equipment in the machine shop material and manufacturing processes laboratories Fifth is that no student is allowed to work in the machine shop material and manufacturing processes labs unless an instructor qualified lab supervisor or grad assistant is present Sixth is that eye protection must be worn anytime a student uses a grinder using an etchant and melting metal Seventh is that proper hand protection must be worn when handling acids or caustic solutions Eighth is that any cuts or burns need to be reported immediately to the instructor qualified lab supervisor or graduate assistant and they will decide what course of action needs to be taken to take care of injury Nineth is that no jewelry rings bracelets and wristwatches is allowed in the machine shop materials and manufacturing processes lab And finally because a materials laboratory contains many hazardous corrosives and or poisonous liquids you should never drink from laboratory glassware In this lab we used the LECO PR 32 to mount the given sample into Bakelite then using the belt sander we sanded off the top layer of the sample to get a flat surface The using the microscope we took pictures at 50x 100x and 200x magnification of the surface after sanding with 80 grit paper Then sanded with 220 grit and took the pictures again then used 360 grit paper and took the pictures again Then finally we used 600 grit paper and took the pictures one more time