Ruth you might try to contact then at this site, they are still in business.I purchased a used grizzly jointer and am trying to get the knives set correctly. The former owner had upgraded the cutting head to a Geetech spiral cutter head (also made by Sunhill). This is one with thin 6" long replaceable blades. Does anyone know how to adjust the knife positions? There are two round tools in the cutter head box but I don't know how to use them. I have an extra set of knives that I would like to install to hold off needing to replace the cutter head entirely since I probably will not be able to find more blades..
thanks for any help,