Atoplee 1pcs Woodworker 1/2 Inch Square Hole Drill Bits Mortising Chisel Set, Mortise Chisel & Bit Set

Atoplee 1pcs Woodworker 1/2 Inch Square Hole Drill Bits Mortising Chisel Set, Mortise Chisel & Bit Set

<p><b>Square hole drill using method: </b><br></p><p>1.installed in the square hole machine directly , supporting the use, you can drill a square hole (especially recommended). <br></p><p>2. If bench drills or electric drills are used, they must be strictly executed according to the operation method. <br></p><p>Otherwise, they can only be processed into round holes and cannot be processed into square holes. <br></p><p>First, mark the position of the hole and use the hole drill to make a hole. <br></p><p>Secondly, after removing the core, use a square hole jacket to align the position of the hole. <br></p><p>Finally, tap the square hole continuously and slowly.</p><p>Then,you can get the square hole.</p><p><b>Features:</b></p><p> Professional wood drill bit, suitable for construction, installation, renovation, decoration industry, etc.</p><p> Special steel, heat treatment, HRC48~50, high hardness, lengthened core, high concentricity.</p><p> It will get double effect by matched use with mortise and tenon machine, the square hole punching needs to use electric drill, hammer & other tools.</p>