Busch Carbide Pear Cutter | Busch No. 427FX 029 – Fine Crosscut – HP | Pack of 1
The carbide cutter pear fine double cut from Busch & Co. GmbH is a precision rotary instrument engineered for demanding material removal and shaping tasks across a range of professional applications. Manufactured to exacting German standards, this cutter delivers consistent performance where controlled, clean cutting is essential.
Product Specifications
- Type: Carbide Cutter
- Shape: Pear
- Cut: Fine Double Cut
- ISO Classification: 500 104 237 140 029
- Shank: HP (Handpiece)
- Pack Quantity: 1
Applications
The carbide cutter pear fine 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 | 2.9 mm (ISO size 029) |
|---|---|
| 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 pear fine double cut, this instrument combines the durability of solid carbide construction with the refined cutting action of a fine double-cut pattern. The pear shape provides excellent access and control in contoured or recessed areas, minimising chatter and delivering a smooth surface finish. Made in Germany, it reflects Busch & Co. GmbH's long-standing commitment to quality and precision engineering.

FAQ
What shank type does this cutter use? This cutter is designed for HP (handpiece) use, making it compatible with standard HP-type rotary handpieces.
What does fine double cut mean? Fine double cut refers to a crosscut tooth pattern that produces a smoother finish and finer chip removal compared to a single or coarse cut.
Is this cutter suitable for dental laboratory use? Yes. The carbide cutter pear fine double cut is well suited for crown and bridge technology and model casting applications commonly found in dental laboratory settings.
Specifications: Busch No. 427FX 029
| Busch figure | 427FX |
| Shape | Pear |
| ISO size / head diameter | 029 (2.9 mm max head Ø) |
| Cut type / toothing | Fine 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 pear head is a short, rounded oval for hollowing and contouring the inner and lingual surfaces of dentures. At 2.9 mm the head is on the larger side, for covering wide acrylic surfaces in fewer passes. Fine crosscut teeth trade removal speed for surface quality: use it after shaping, as the last cutting step before polishers.
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.

