Selection Criteria for Round-Bottom Sharp Blades

How to Select Round-Bottom Sharp Blades

Round-bottom sharp blades create smooth-bottom grooves, curved channels, decorative flutes, and detailed contours without leaving sharp internal corners. The right blade should match the material, groove width, required radius, cutting depth, machine power, and desired surface finish. Careful selection reduces chatter, burning, edge marks, and unnecessary finishing work.

Compare blade diameter, bottom radius, flute length, shank diameter, carbide grade, coating, and flute geometry before machining. A rigid tool holder with low runout keeps the cutting profile stable, while suitable spindle speed, feed rate, step-down, and chip evacuation protect the edge. Use shallow test passes on unfamiliar materials, inspect the groove, and adjust the setup gradually. Correct blade selection improves contour accuracy, surface quality, productivity, and service life in routing operations.