I am building a large entertainment center and would like to use Confirmat scews to screw the permanent shelf in. I will be using a special drill bit for the screws and drilling from through the exterior of the side to the shelf at 90 degrees. The shelf is maple ply and 3/4 thick. How do I drill a straight hole without going through the top or bottom of the self? Are there any guides that will work? Here is my wonderful drawing.
I I Melamine side 3/4
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I__ I__ Drill bit through 3/4 maple ply
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