The tool is obviously still cutting too deep. The area you have the rule on is showing a width of about 3mm, assuming you have been cutting from the file Tony posted above, that region is 1.5mm wide. With a 90 degree tool, the tool tip should only be 0.75mm deep into the material at that point, and it is obvious from the photo that the tool is substantially deeper than that.
Also, the ends of that section of the design are also square, so the toolpath comes upto the surface at the corners leaving a sharp corner, from your photographs the corners are still round indicating that the tool is still below the material surface at that point.
Another possibility is that the tool you are using does not actually come to a sharp point. Many VBit tools have a 'flat' tip on them, and if this is the case you need to tell VCarve Wizard about the true tool shape as the toolpath needs to be different if the tool does not come to a sharp point. It is difficult to tell just from the photo, but I don't think this is the case here, it looks as though you have a sharp line at the bottom of the cuts, indicating that the tool does come to a sharp point.
So again I think there is a problem with setting the z depth of the tool. To create the difference in width you show in your photo, the tool only needs to be set 0.75mm (0.030") too deep and hence cutting at 1.5mm instead of 0.75mm. A
What method are you using to set the tool z depth? Are you setting the tool depth at the approximate centre of the material you are cutting?
Generally, if you are cutting designs with small detail it is critical that the machine is both accurate and that the z height of the tools is set very precisely. If you are cutting larger pieces the level of accuracy is not as critical, but V carving does require far more accuracy then general 2d cutting.
Last edited by BrianM
on Sat Feb 04, 2006 12:12 am, edited 1 time in total.