Niqua® HT(f) Tool Steel Burs Lens

Mill shallow undercut grooves, refine delicate bearing seats, and scribe clean transition channels without blade chatter or material grabbing. Manufactured to Swiss precision standards for NIQUA, the NIQUA® SUPER Q® Series "HT(f)" Extra Flat Lens Bur (Linsenfräser extra flach) is a specialized rotary cutter engineered for fine jewelry setters, goldsmiths, and precision micro-machinists.

Distinguished by its ultra-thin lenticular profile with double-sided radial fluting, the Series HT(f) bur functions as a miniature rotary knife edge. This low-profile geometry enables artisans to reach narrow gaps, cut shallow bearing shelves in prongs, and define accent lines without disturbing adjacent metal walls. Forged from premium hardened tool steel and finished with a precision fine-cut (f) tooth pattern, each bur delivers clean shearing action without clogging or galling in annealed, ductile precious metals such as yellow gold, sterling silver, copper, and brass. Built with an industry-standard 2.35 mm (3/32") shank, these burs drop directly into jeweler flexible shaft handpieces, precision micromotors, and quick-change bench systems. Available in a calibrated micro-size progression from 1.00 mm to 2.00 mm (Article No. 03 270 010 to 03 270 020), each size is packaged in a bench storage box containing 6 pieces.

Why Choose NIQUA® SUPER Q® HT(f) Extra Flat Lens Burs

• Extra Flat Lenticular Geometry: The knife-edge lens profile provides maximum clearance in restricted setting cavities, opening narrow slots and lateral bearing shelves without gouging.

• Fine Cut (f) Tooth Pattern: Densely spaced cutting teeth slice smoothly through soft, annealed metals, preventing the tool grabbing and chatter common with coarse cutters.

• Anti-Clogging Tool Steel: Specifically recommended for gummy, annealed precious metals and non-ferrous alloys that tend to clog conventional cutting tools.

• Precision Edge Definition: Allows clean scoring of layout lines, prong separation notches, and sharp transitions across delicate jewelry mountings.

• Low-Vibration Concentric Operation: Precision-ground Swiss shank minimizes radial runout, ensuring steady handpiece tracking under high microscope magnification.

• Hardened Tool Steel Construction: Provides dependable edge retention, wear resistance, and extended tool life across repetitive bench tasks.

• Universal 2.35 mm (3/32") Shank: Provides seamless compatibility across standard flexible shaft systems, quick-change handpieces, and laboratory micromotors without collet adapters.