Is my drill countersink poor quality or am I not using it right?

[Catter]

Doing some wood work recently & I needed to use the countersink. It was really tough going. Both the drill & countersink are DeWalt (presumably decent quality). I drilled my holes and then used the countersink to make a recess for the screw heads but it was really hard work. I had to put a LOT of pressure behind the drill. The countersink didn't so much cut the wood as 'press' it flat. It was really hard going and the countersinks cut were a bit unsatisfactory. The wood was planed pine & it felt quite moist/resinous whilst drilling. It was the first time of using that particular countersink and the edges don't really feel sharp. In my youth I remember cutting these beautifully. I've included pics. Do you think the wood was just too new or has the painted finish on the countersink taken the edge off it's sharpness? Many thanks!

Don't know. It doesn't look sharp. Seems to have a slight slope on the blades so won't work well if your drill is set to reverse. I think mine have narrower cutting fins (what's the right word?). The sharper they are the quicker they wear out.

You can get a different sort looking like a steel cylinder with only one cutting edge, you need one for each screw size so they work out more expensive.

Softwoods can be oily so maybe that lubricated the tool and prevented it cutting.

My carpenter uses self-cutting screws where there is a countersinking rib on every screwhead.

Agree, looks blunt. They are only a couple of quid so maybe treat yourself to a new one? Blunt tools make for hard work & can lead to accidents.