1/4 inch Centering Dowel Drill Jig

Model originally uploaded to Thingiverse at https://www.thingiverse.com/thing:4797244.

This is a self-centering 1/4" dowel drilling jig I designed up for a specific project. Works really well for boards 1" thick or less. Uses a 1/4" ID x 3/8" OD x 1/2" long metal spacer for guiding the drill bit. It's a tight press fit, depending on your printer's tolerances.

This is the spacer I used: https://www.lowes.com/pd/Hillman-5-Count-0-250-in-x-3-8-in-Plain-Steel-Standard-SAE-Flat-Washer/3012470

Enjoy!