This Old House contributor Mark Clement shows you the proper technique for lining up and driving screws. Use these tips to avoid stripping screws and slowing your progress.
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Circular Saw 101: How to Make a Straightedge: https://www.youtube.com/watch?v=5FBXxGqU-MQ&index=1&list=PLkJADc1qDrr8vM3qpAS7QT1Wwu-bNDNz-
Circular Saw 101: How to Square the Saw Blade: https://www.youtube.com/watch?v=PKMgUSiSaj4&index=2&list=PLkJADc1qDrr8vM3qpAS7QT1Wwu-bNDNz-
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In this video we use the Marvel Saw to help make a cast iron lap and then precision lap a hardened Anton v block. We check the results of the lapping with a monochromatic light source and an optical flat.
Microgrit abrasives https://www.microgrit.com/index.html
Accu-finish/Glendo https://accu-finish.com/
Optical flats https://en.wikipedia.org/wiki/Optical_flat