What's your favourite sketching tool? Is it a pen, or a pencil. Tell me in the comments below. I was taught with a pencil so it's often been my favourite tool to use until recently. In the last couple of years I've transitioned to using a ballpoint pen. This is not a fancy art pen, this is a regular Parker black medium ball point pin. The ink is beautiful, smooth, flowing black ink. Let me also makes a nice black pen. I've tried a fine balpoint, and I've tried a broad ball point, but I come back to the medium. Also, a Parker ballpoint refill is easy to get in lots of places, the cartridges last ages before they run out, and they are a standard replacement cartridge meaning that you can use these cartridges in lots of different pens. I used to only sketch with a pencil, and my favourite pencil is a soft mechanical clutch pencil. I've got one which is a 4B and a 3 mm lead which is quite thick. I used to draw with a 2 mm lead but I found it too thin. I've also tried 6 mm or 5 mm leads, they're great and they are really big.