Niqua® 34 Tool Steel Burs Cylinder Squared

Machine true 90-degree internal steps, level flat-bottom stone seats, and square internal gallery walls with positive vertical guidance. Manufactured in Germany by NIQUA to exacting European toolmaking standards, the NIQUA® SUPER Q® Cylinder Squared Bur "34" (Flat Cylinder) is a dedicated rotary cutting instrument engineered for goldsmithing, stone setting, and precision cavity machining.

Featuring a straight cylindrical body with sharp end-cutting flutes across the flat tip and circumferential cross-cut teeth along the sides, the Series 34 bur cuts simultaneously on its bottom face and perimeter walls. This geometry enables the artisan to establish uniform floor depths and true, vertical side edges without digging or gouging adjacent structures. Forged from premium hardened tool steel, each bur delivers clean chip clearance in soft, ductile alloys including gold, sterling silver, copper, and brass. Fitted with an industry-standard 2.35 mm (3/32") shank, these burs drop directly into jeweler flexible shaft handpieces, quick-change chucks, and brushless micromotors. Available in a full size progression from 0.60 mm to 2.70 mm (Item Codes: 03 208 006 to 03 208 027), each size is packaged in a bench-ready storage box of 6 pieces.

Why Choose NIQUA® SUPER Q® Cylinder Squared Burs "34"

End-and-Side Cutting Geometry: Precision-cut teeth on both the flat tip and the cylindrical body allow simultaneous floor leveling and wall squaring in a single pass.
True 90° Internal Right Angles: Creates clean right-angled corners and perpendicular shoulders for baguette, square, and emerald-cut stone mountings.
Controlled Depth Regulation: The flat end face registers against the cavity floor, maintaining a steady, uniform depth across broad recesses without wandering.
Clog-Resistant Chip Fluting: Engineered gullets rapidly clear metal shavings away from the cutting zone to prevent clogging and heat buildup in precious metals.
Low-Vibration Concentric Operation: Precision-ground tool steel shanks reduce radial runout, ensuring smooth running and preventing chatter marks under high magnification.
Hardened German Tool Steel: Delivers long service life, durable edge retention, and smooth cutting efficiency across daily bench work.

Size Selection

Diameter (mm)	Item Code
0.60 mm	03 208 006
0.70 mm	03 208 007
0.80 mm	03 208 008
0.90 mm	03 208 009
1.10 mm	03 208 010
1.20 mm	03 208 012
1.40 mm	03 208 014
1.60 mm	03 208 016
1.80 mm	03 208 018
2.10 mm	03 208 021
2.30 mm	03 208 023
2.50 mm	03 208 025
2.70 mm	03 208 027

Gemstone & Diamond Setters: Leveling horizontal seats, squaring corners for princess and baguette diamonds, and truing channel-setting grooves.

Fine Goldsmiths & Silversmiths: Preparing bezel cups, flattening deep setting beds, and profiling straight gallery shoulders.

Jewelry Repair Workshops: Removing excess solder from flat joints, truing distorted bezel floors, and re-squaring worn prong seats.

Precision Model Makers: Milling miniature step shoulders, defining crisp geometric recesses, and trimming non-ferrous metal parts.

Free Global Shipping
We process orders within 1-3 business days. Estimated standard international delivery is 6-12 business days.

14-Day Returns
We have a 14-day return policy. Items must be unused, with all original accessories, and in original packaging.

For full details, please refer to our Shipping and Refund policies at the bottom of the page.