🟢 DIY - Adjustable Drill Bit

In this video, I make an adjustable drill bit. I start by using the metal I cut from the M12 bolt. Then I am cutting a Spade Drill Bit. Then I combine the two. This adjustable drill bit I made can be used to drill holes between 16mm and 35mm. It is possible to use it both by attaching it to the column drill and by attaching it to the hand drill. #AdjustableDrillBit #drillbit #drilling #wooddrillbit ➤Tools/Supplies Used : Sanding Machine :