Busch Carbide Taper (Cone) Round Cutter | Busch No. 429X 045 – Crosscut – HP | Pack of 1
The carbide cutter taper (cone) round medium double cut from Busch & Co. GmbH is a precision-engineered rotary instrument designed for demanding material removal tasks across a range of professional applications. Built to exacting German manufacturing standards, this cutter delivers consistent, reliable performance in dental laboratory settings.
Product Specifications
- Type: Carbide Cutter
- Shape: Taper (Cone) Round
- Cut: Medium Double Cut
- ISO Classification: 500 104 194 190 045
- Pack Contents: 1 piece
Applications
The carbide cutter taper (cone) round 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 | 4.5 mm (ISO size 045) |
|---|---|
| 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?
As a carbide cutter taper (cone) round medium double cut, this instrument offers a balanced cutting action — the medium double cut geometry removes material efficiently while maintaining a smooth surface finish. Carbide construction ensures long service life and resistance to wear, making it a dependable choice for high-volume professional use. This product is proudly Made in Germany.
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 is the ISO classification for this cutter? The ISO classification is 500 104 194 190 045.
What shank type is this cutter designed for? This is an HP (Handpiece) shank cutter suitable for straight handpiece use.
Is the carbide cutter taper (cone) round medium double cut sold individually? Yes, this listing is for a pack of 1 unit.
What cut type does this cutter use? It features a medium double cut, providing efficient stock removal with a refined finish suitable for professional applications.
Specifications: Busch No. 429X 045
| Busch figure | 429X |
| Shape | Taper (Cone) Round |
| ISO size / head diameter | 045 (4.5 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. Its crosscut (double-cut) toothing removes stock quickly and clears chips well, so it is a shaping rather than a finishing cutter. The 4.5 mm head is a large size for fast reduction of denture bases and broad framework surfaces.
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.

