Niqua® Q 1237 Set

Mill precision stone seats across a complete spectrum of calibrated melee and solitaire gemstones without changing bur profiles or risking tool chatter. Manufactured to strict Swiss-German precision standards for NIQUA, the NIQUA® SUPER Q® "Q(f) 1237" Tool Steel Bur Set (Hartfräser / Steinfasserfräser-Set) brings together an extensive progression of fine-cut stone setting burs in a single benchtop workstation stand.

Engineered with a compound cutting geometry combining an angled upper conical section that mirrors standard brilliant-cut pavilions with a straight lower cylindrical guide, each Q(f) bur establishes both the girdle shelf and pavilion clearance in one concentric plunge. The fine-cut tooth pattern (f) delivers smooth cutting action, steady feed control, and low-vibration operation in ductile alloys including yellow gold, sterling silver, copper, and brass. Machined from hardened high-grade tool steel, the cutting flutes resist edge chipping and material galling during repetitive bench production. Built on universal 2.35 mm (3/32") shanks, every bur fits directly into jeweler flexible shaft handpieces, precision bench micromotors, and quick-change bench systems. Housed in a multi-tier rotating carousel stand with a clear protective dome (5 cm base diameter × 7 cm height, 74.2 g total weight), this set provides immediate access to calibrated sizes from 0.90 mm to 4.40 mm.

Why Choose the NIQUA® SUPER Q® Q(f) 1237 Stone Setting Bur Set

• Continuous Calibrated Size Progression: Spans 24 precise diameters from 0.90 mm micro-pavé up to 4.40 mm solitaire settings, ensuring an exact match for standard diamond sieve sizes.

• Specialized Compound Setting Geometry: Upper conical angle matches gemstone pavilions while the straight cylindrical base cuts a vertical seat wall to hold the girdle level.

• Fine Cut (f) Tooth Architecture: Closer, finer-fluted teeth shear ductile metal smoothly, preventing aggressive grabbing or chatter in soft precious metals.

• True Concentric Swiss Machining: Precision-ground shanks minimize radial runout, eliminating oval seats and uneven prong shoulders under bench microscope inspection.

• Clog-Resistant Chip Clearance: Optimized flute gullets clear swarf rapidly, preventing metal galling and tooth buildup in soft gold and silver.

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

• Rotary Benchtop Storage Carousel: Multi-tier stepped stand with a clear acrylic dome protects cutting edges from bench dust and keeps burs indexed for rapid selection.