Sooner or later you will need to make a rectangular hole for an LCD or other component in one of your projects.
A CNC machine takes about 8 seconds to do this.
If you don’t have access to a CNC machine, you can make reasonable rectangular holes by hand.
Tools you will need:
Auger bit file:
http://www.leevalley.com/en/wood/page.aspx?cat=1,320,43072,43089&p=70693
The key to doing a good job is to use four jointed hardwood guides.
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