So drilling shelf pin holes less than 6" to 8" from the top or bottom of the case is pointless. It's better to space the holes in “book-sized” increments (12"-14") to accommodate anything from a shelf full of pint-sized paperbacks to oversized coffee table books.
How do you put peg holes in cabinets?
https://www.youtube.com/watch?v=-Di8kToP4l0
How do you drill a hole in a shelf pin?
https://www.youtube.com/watch?v=YjUI4yZDC90
How do shelf pins work?
A shelf pin jig is attached to our project and a drill with a shelf pin drill bit is used to drill shelf pin holes. Then, shelf pins are pushed into the holes and the pins support the shelves. In my opinion shelf pins have a cleaner, more polished look compared to shelf standards.Feb 5, 2019