45degree drilling jig. Drilled 150+ holes and every hole was perfect. Not my design, thingi link inside. : r/functionalprint
Kings County Tool Portable Drill Guide Jig | Convert Hand Drill to Drill Press | Bore Up To 45-Degree Angles | 3/8-Inch Shaft and Chuck | 5-Degree Increments | Depth Stop Included -
45 degree jig build
Kolvoii 30 45 90 Degree Angle Drill Guide Jig, Drill Jig for Angled Holes and Straight Hole with 4 Sizes Steel Drill Bits(Blue) - Amazon.com