Dowel Jig
This is a 3/8" dowel jig, used for centering dowel holes on the edge of boards and a stop for offsetting on the face of boards. You need 1/4" dowels, 1/2" metal dowels and a 1/4" bolt and knob in addition to a scrap piece of hardwood, I used beech
Notes
Bushing should be 3/8" inside diameter which would work with a 1/2" hole but may vary on the bushing you buy.
Speeds and feeds were effective with the beech, maybe a little fast but if you had a softer wood it would be perfect. I adjusted while machining to 80% on the beech would and it sounded perfect.