I too will endorse the Lindsay sharpening system. It produces sharp, consistent points, quickly and is priced modestly. You have a wide choice of angles to choose from and you can shape the graver from a blank as well as sharpen. Lindsay also sells three different steel alloy graver blanks of extremely high quality for less money than anyone on the internet. I would suggest having a magnifying glass to get a close up view of the graver point. As an instructor, I notice frequently that there is confusion about dull points, broken tips and uneven heels. See if anyone in your area does a workshop. A day of two of introductory engraving may be equal to months of experimentation. I conduct about four workshops a year but suspect you don't live anywhere near Oregon.