Busch Carbide Taper (Cone) Round Cutter | Busch No. 429X 031 – Crosscut – HP | Pack of 1
The carbide taper (cone) round cutter medium double cut from Busch & Co. GmbH is a precision-engineered rotary cutting instrument designed for demanding material removal tasks across multiple professional disciplines. Featuring a taper (cone) round geometry with a medium double cut tooth pattern, this bur delivers controlled, efficient cutting with reduced vibration and superior surface quality.
Product Specifications
- Type: Carbide Cutter, Taper (Cone) Round
- Cut: Medium Double Cut
- ISO Classification: 500 104 194 190 031
- Shank: HP (Handpiece)
- Pack: 1 piece
Applications
The carbide taper (cone) round cutter medium double cut is well-suited for the following dental laboratory applications:
| Crown and Bridge Technology — Shaping, trimming and finishing of crown and bridge frameworks in the laboratory. | |
| Plastics Technology — Shaping, trimming and finishing of acrylic dentures and appliances. | |
| Model Making — Trimming and detailing of plaster and stone models. | |
| Model Casting Technique — Finishing and adjustment of cast metal frameworks. |
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 Cutter
Manufactured in Germany to exacting standards, this carbide taper (cone) round cutter medium double cut reflects Busch's long-standing commitment to quality craftsmanship. The medium double cut configuration balances stock removal efficiency with surface finish, making it a versatile choice for both laboratory and clinical environments. Its HP shank ensures compatibility with standard straight handpieces used across dental and technical applications.
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 does medium double cut mean? A medium double cut refers to a crosshatch tooth pattern of moderate coarseness, providing balanced cutting speed and surface smoothness compared to coarse or fine cuts.
Is this bur suitable for dental laboratory use? Yes, the carbide taper (cone) round cutter medium double cut is designed for dental laboratory applications including crown and bridge work and model casting technique.
What shank type does this cutter use? This cutter features an HP (straight handpiece) shank for use with standard laboratory handpieces.
Specifications: Busch No. 429X 031
| Busch figure | 429X |
| Shape | Taper (Cone) Round |
| ISO size / head diameter | 031 (3.1 mm max head Ø) |
| Cut type / toothing | Crosscut |
| Shank | HP |
| Lab applications (per Busch) | Crown and Bridge Technology, Model Casting Technique, 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. A 3.1 mm head is a bulk-work size, best on denture bases and other wide surfaces. The crosscut pattern gives fast, cool material removal; follow with a fine cut for the final surface.
Read the guides: Dental Laboratory Burs, Polishers & Abrasives · Bur Speed Chart · Dental Bur Glossary · All lab carbide cutters
Part of our Double Cut Burs: Busch Crosscut Carbide Cutter Collection — browse all 142 shapes, cuts and sizes.

