Busch Carbide Taper (Cone) Round Cutter | Busch No. 429XTI 040 – XTI-Cut – HP | Pack of 1
The carbide cutter taper (cone) round titanium double cut from Busch is a precision-engineered rotary instrument designed for demanding dental laboratory and clinical applications. Engineered in Germany, this medium double cut taper (cone) round carbide cutter is optimized for efficient, controlled material removal on titanium — one of the most challenging materials encountered in modern restorative and prosthetic workflows.
Product Overview
The 429XTI 040 HP Cutter XTI-Cut is a carbide cutter taper (cone) round titanium double cut instrument featuring a medium double cut geometry. This configuration delivers a balance between aggressive stock removal and a refined surface finish, making it suitable for contouring, shaping, and finishing titanium restorations, frameworks, and implant components with consistent results.
Key Features
- Carbide construction for long-lasting cutting performance
- Taper (Cone) round shape for precise access and contour work
- Medium double cut pattern optimized for titanium
- HP (handpiece) shank for compatibility with standard laboratory handpieces
- German engineering and manufacturing quality
Instrument Dimensions
| Head Ø | 4.0 mm (ISO size 040) |
|---|---|
| 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.
Applications
The carbide cutter taper (cone) round titanium 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. |
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 material is this cutter designed for? This carbide cutter taper (cone) round titanium double cut is specifically formulated for use on titanium, providing efficient cutting without excessive heat build-up or premature wear.
What does medium double cut mean? A medium double cut refers to the crosscut flute pattern on the carbide head, which allows for smoother cutting action and improved swarf evacuation compared to single cut designs.
Is this instrument sold individually? Yes, this product is supplied as a pack of 1.
Specifications: Busch No. 429XTI 040
| Busch figure | 429XTI |
| Shape | Taper (Cone) Round |
| ISO size / head diameter | 040 (4.0 mm max head Ø) |
| Cut type / toothing | XTI-Cut |
| Shank | HP |
| Lab applications (per Busch) | Crown and Bridge 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. The XTI-cut is a medium double cut designed for titanium, giving controlled removal on titanium frameworks and implant components without excessive heat; it is not a general-purpose cutter. The 4.0 mm head is a large size for covering broad surfaces quickly.
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.
