Busch Carbide Taper (Cone) Round Cutter | Busch No. 429 031 – HP | Pack of 1
The carbide taper (cone) round cutter bur from Busch & Co. GmbH is a precision-engineered rotary cutting tool designed for demanding material removal tasks. Featuring a taper (cone) round geometry with a medium cut specification, this carbide cutter delivers controlled, consistent results across a range of professional applications.
Product Specifications
- Type: Carbide Cutter
- Shape: Taper (Cone) Round
- Cut: Medium Cut
- Standard Classification: ISO 500 104 194 175 031
- Pack Quantity: 1
- Country of Origin: Made in Germany
Applications
The carbide taper (cone) round cutter bur is well-suited for the following dental laboratory applications:
| Plastics Technology — Shaping, trimming and finishing of acrylic dentures and appliances. | |
| Model Making — Trimming and detailing of plaster and stone models. |
Instrument Dimensions
| Head Ø | 3.1 mm (ISO size 031) |
|---|---|
| Shank | HP (Straight Handpiece) — 2.35 mm Ø, 44.5 mm overall length (ISO 104) |
Per ISO 6360, the size number is the maximum head diameter in tenths of a millimeter. See our Busch Bur Size Chart for the full size conversion table, shank codes, and color ring guide.
Why Choose This Carbide Cutter?
Manufactured to strict German engineering standards, the carbide taper (cone) round cutter bur offers reliable performance in repetitive cutting operations. The medium cut configuration balances material removal rate with surface finish quality, making it a versatile tool for both roughing and intermediate finishing stages. Carbide construction ensures extended tool life compared to standard steel alternatives.
Busch Warranty & 90-Day Returns
This Busch instrument is guaranteed against manufacturing and workmanship defects — we'll repair or replace it under normal professional use. Unused product in original packaging can also be returned or exchanged within 90 days of your invoice date. Full terms are on our Warranty page.

FAQ
What ISO classification does this cutter conform to? This cutter conforms to ISO classification 500 104 194 175 031.
What is the cut type of this bur? This is a medium cut carbide cutter, suitable for general material removal and intermediate finishing.
Is this carbide taper (cone) round cutter bur compatible with standard HP handpieces? Yes, it is designed for use with straight HP (handpiece) systems, as indicated by the HP designation in the product reference.
Specifications: Busch No. 429 031
| Busch figure | 429 |
| Shape | Taper (Cone) Round |
| ISO size / head diameter | 031 (3.1 mm max head Ø) |
| Cut type / toothing | Medium Cut |
| Shank | HP |
| Lab applications (per Busch) | Model Making, Plastics Technology |
| Pack size | Pack of 1 |
| Material | Carbide |
The taper (cone) round head is the all-purpose lab contouring shape: the cone reaches into interdental areas and around clasps while the rounded tip avoids gouging. With a medium cut it shapes and finishes in one tool, at the cost of some removal speed. At 3.1 mm the head is on the larger side, for covering wide acrylic surfaces in fewer passes.
Read the guides: Dental Laboratory Burs, Polishers & Abrasives · Bur Speed Chart · Dental Bur Glossary · All lab carbide cutters

