Drilling Square Holes
By Dane Carlson on May 14, 2013 in Inventions
This video of a machine drilling square holes has making the rounds on the interwebs today. I thought it was pretty fascinating, and wanted to share a couple other videos of drills drilling square holes I found while researching the invention.
More videos after the jump.
Photo by donatas1205/ShutterStock.
Business Opportunities Weblog editor and publisher Dane Carlson lives in the Sierra Nevada mountains of California, just 15 miles from Yosemite National Park. He accidentally became a professional blogger in 2001. He has added 12,203 posts to the site.
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