... guide and inventer and all screw. blade grinder , knife grinding machine, knife sharpener Max.grinding length(mm):1500,2000, 2500, ... 3000,3500,4500 can be selected. grinding machine knife Precision type:High-precision, high transmission ball screws, efficiency, ... Machinery, specilized in the manufacture and R&D for woodworking machines,plywood production equipments and log home machinery, adopts ...