View source for Wood Magnesium Sample Polishing

[[Category: SOP]]

==Safety==
•Must wear appropriate PPE (safety glasses and gloves when needed)

==Procedure==
# Start grinding with 240 grit silicon carbide sandpaper and a force around 20 N. To change the force to 20 N, turn the screw until the dot is aligned with the second line from the bottom. 
# Let the grinder run for 1 minute and check to see if the sample is planar. If the sample is not planar, then run the grinder for an additional 30 seconds to 1 minute. 
# Take the samples out and run them under water. Spray the samples with the air hose until they are dry.
# Spray the samples with ethanol and dry them with the air hose. 
# Replace the 240 grit sandpaper with 320 grit sandpaper. 
# Run the samples for 1 minute on the grinder.
# Take the samples out, rinse with water, and dry with the air hose. Then rinse the samples with ethanol and dry with the air hose. 
# Repeat this process with 400, 600, and 800 grit sandpaper. Grind for 1 minute, rinse with water and dry, rinse with ethanol and dry, and replace with next grit.
# After completing the 800 grit stage, place the sample in the sonicator on 30 for about 10 minutes. 
# Put a couple drops of the 3 µm diamond compound on an unwoven pad and spread it around with a gloved finger. 
# Put Red Lube Polishing Lubricant on the pad to lubricate it. Do not put water on the pad.
# Grind for 5 minutes.
# Put the sample in the sonicator for another few minutes. 
# Put a couple drops of the 1 µm diamond suspension on an unwoven pad.
# Put Red Lube Polishing Lubricant on the pad to lubricate it. Do not put water on the pad.
# Grind for 5 minutes.
# Run water on the grinder to make sure it is clean.
# Replace the pad with the diamond compound with a blue cloth pad and get the pad wet with water and a few sprays of Al3O2 with DI water. 
# Run the grinder for about 90 seconds keep spraying the pad occasionally with the Al3O2 with DI water mixture to ensure that it stays wet. 
# Run the samples for another 30 seconds with just water. 
# Remove the samples and spray with ethanol. Make sure not to scratch the polished face when taking it out of the grinder. 
# Dry with hair dryer. Make sure not to touch the polished face.