Drag Knife
grabcad
Inspired by Brian Oltrogge's video on a drag knife project, I attempted to create my version using a CNC router. My design features thinner sections than his, specifically for aluminum, and requires cutting one part from 6mm thick stock and the rest from 3mm. The 3mm pieces are identical except for the tapped one; these could be fabricated without changing tools. All bolts are M5. The mounting rod and blade holder should fit snugly into bearings, but not too tightly to support axial loading. An update on September 2, added a drag length of approximately 1mm and advised checking the model's fit before use, as not all blades may be identical.
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