Hello all, new member here. I have been reading this thread, (I'm up to page fifty something) and have bought a portrait. I am interested in cutting card, and didn't want to use the expensive supplied blade for this, so have bought a CB09. I have a couple of questions - I'm sorry if they have been answered and I have missed it. When doing a practice cut on cerial packet card (Morrisons bran flakes) about half a mm thick, I set the blade projection to about half a mm, and when cutting the blade retreated back into the body of the cutter. Has anybody else had this problem? I managed to cure it by wrapping tape around the adjusting screw to lock it. The other question is with respect to scribing. I note that the cutting blade can be screwed out to project about 3mm. Has anyone tried grinding down the end of a blunt blade to a point to make a scriber? Regards Dave