HUGE centering drill hole guide

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Pick what size hole you want to drill and place the bushing into the main base piece.  Then simply place it onto your material to be drilled and turn it until it touches on both sides.  This places the hole exactly in the center.  This is designed to accommodate up to 12", which is more than standard 2x12 lumber, and can be used for any narrower material as well.

 

Note there are 2 print profiles.  One is only the main piece as this uses the same size bushing inserts for the different drill bit sizes as my original model.  So if you already have those you only need to print the larger main piece.  If you have not printed the previous version there is a print profile here that has everything you need on one plate.

 

Looking for a smaller size as well:

Original compact version: Compact Centering Drill Hole Guide - Free 3D Print Model - MakerWorld

Middle sized for up to 3.5: Large Centering drill hole guide - Free 3D Print Model - MakerWorld

 

 

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