Busch Carbide Taper (Cone) Round Cutter | Busch No. 429SGX 045 – Super Coarse Grit, Crosscut – HP | Pack of 1
The carbide taper (cone) bur very coarse double cut from Busch & Co. is a precision-engineered rotary cutting instrument designed for demanding material removal tasks. Manufactured in Germany to exacting standards, this tool delivers reliable, consistent performance across a range of applications.
Product Specifications
- Type: Carbide Cutter, Taper (Cone) Round
- Cut: Very Coarse Double Cut
- Standard Classification: ISO: 500 104 194 223 045
- Shank: HP (Handpiece)
- Pack Size: Pack of 1
Key Features
This carbide taper (cone) bur very coarse double cut instrument features a taper (cone) round geometry that enables efficient stock removal and precise shaping. The very coarse double cut pattern is optimised for aggressive cutting action while maintaining control, making it well suited for tasks that require rapid material reduction. As a genuine Busch product, it upholds the high manufacturing tolerances and material quality associated with German-engineered dental and technical instruments.
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.
Applications
This carbide taper (cone) bur very coarse double cut is particularly well suited for model making applications, where accuracy and repeatability are essential. Its robust cutting flutes handle a variety of materials, allowing the user to achieve clean, defined results with minimal effort.
The carbide taper (cone) bur very coarse double cut is well-suited for the following dental laboratory applications:
| Model Making — Trimming and detailing of plaster and stone models. |
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 double cut mean on a carbide bur? Double cut refers to a crosshatch flute pattern that cuts on both the forward and reverse strokes, resulting in faster material removal and a smoother finish compared to single cut versions.
Is this bur compatible with standard HP handpieces? Yes, the HP shank is designed to fit standard straight handpiece chucks commonly used in dental and technical applications.
What is the ISO classification for this bur? The ISO classification for this instrument is 500 104 194 223 045, which defines its shape, size, and cutting characteristics in full detail.
Specifications: Busch No. 429SGX 045
| Busch figure | 429SGX |
| Shape | Taper (Cone) Round |
| ISO size / head diameter | 045 (4.5 mm max head Ø) |
| Cut type / toothing | Super Coarse Grit, Crosscut |
| Shank | HP |
| Lab applications (per Busch) | Model Making |
| 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 4.5 mm head is a large size for covering broad surfaces quickly. Super coarse crosscut teeth remove material very quickly and resist clogging; refine the surface afterwards with a finer cutter.
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.

