The fastest and best way is a rotabroach on a mag drill or a mill. You can modify those pretty easily to be smaller.

Just make the largest size the on the bit your target size. If you don’t have a good drill press, an actual step drill for sheet metal will work great.

It will take a good drill press to drive a twist drill of that size in steel. By signing up you agree to receive emails from DEWALT® with news. Black and Gold IMPACT READY® Metal Drill Bit Set (12 pc) DD5155. If you have a decent drill press I’d pilot drill whatever that web size is and jump right to on size. Black & Gold Impact Ready Drill Bit 1/4' DWAH1182. The pressure the tips take is huge when you don’t have the rest of the cut to take some of the cutting force.Ī pilot drill need only be as big as the web of the main drill. I used a Dewalt DWD460, and the very first time I. Please review the attached file for complete directions regarding the sharpening of DEWALT self-feed bits. Twist drills are designed to cut on the cutting edges on the leading face of the drill, not on the periphery of the flute. it takes a ton of power to drill a 2-9/16 hole with this style bit. They are ideal for wood, plastic, and metal. The drill bits included in both sets are quite sturdy and durable, also they are constructed with heavy-duty metal. The edges of the flutes get absolutely trashed when you cut like this. In the above Dewalt DW1361 review, we have mentioned the set comes with 21-pieces of drill bits and the DW1342 set also includes the same number of drill bits. It is also very aggressive so hold on to it tightly in tough wood. That’s not how twist drills are designed to cut. Because this is an auger drill bit it is very efficient at pulling out the drilled wood. When in 2nd gear, pointing chuck straight up (as in drilling on ceiling), in drill mode, while going slow, they all make an annoying clicking noise. Please stop recommending “step drilling” as in using a bunch of drills and stepping up sizes. Steven Members 163 Location: USA Posted NovemI sub-contract part time for a builder.

Dewalt drill bits too aggressive