How hard is the cutting material?

The carbide grade used in this pcd pierce & roundover bit delivers 1,500–2,000 HV / 7,000–9,000 HV hardness, which keeps the cutting edge sharp under continuous load.

Can you supply OEM or ODM parts, and how fast?

Yes. VPOINT TOOLS runs two factories in China (Chengdu and Dongguan) and accepts OEM and ODM orders. Standard samples and in-stock items ship within 24-48 hours; custom tooling is quoted per specification.

Which machines and materials is this pcd pierce & roundover bit used for?

It is used on CNC routers, table saws and spindle moulders for cutting particle board, MDF, plywood, solid wood and aluminium composite panels. Chipbreaker or replaceable-insert models are available for high-volume production runs.

Do you ship worldwide?

Yes. VPOINT TOOLS ships carbide and PCD woodworking tooling to more than 100 countries. Tell us the destination and application and we will confirm freight cost and lead time.

PCD Pierce & Roundover Bit

PCD pierce and roundover bits pierce through the board and round the edge of the aperture in one setup on compatible CNC woodworking machines. Fourteen configurations cover cutting diameters from 6.35 to 63.5 mm with radii from 2.38 to 31.8 mm, referenced in inches by shank size.

Product Description

PCD Pierce & Roundover Bit for CNC Woodworking

PCD pierce & roundover bits pierce through the board and round the edge of the aperture in one setup on compatible CNC woodworking machines. Fourteen configurations cover cutting diameters from 6.35 to 63.5 mm with radii from 2.38 to 31.8 mm, referenced in inches by shank size.

Design and Construction

＋The tool combines a piercing section with a roundover profile, both carried in polycrystalline diamond (PCD) brazed onto a 40Cr chrome-molybdenum steel body. Reference sizes run from 1/4 × 1/4 up to 1/2 × 2-1/2 in the source notation, with the radius R defining the finished aperture edge. The series is produced in the Sichuan and Dongguan, China manufacturing bases.

How It Works

＋The piercing section cuts through the board at the aperture position, and the roundover profile then machines the edge of the opening to the radius R as the tool follows the aperture path. One setup completes both operations, keeping the aperture edge and its radius consistent across the sheet. Confirm the board thickness, aperture dimensions and required edge radius before ordering.

Applications

Piercing through boards
Rounding the edge of an aperture
For compatible CNC woodworking machines, engraving machines and routing machines

Suitable Materials

MDF, chipboard and calcium board, subject to grade and application review
Suitability depends on the specific material grade, profile and machining conditions; confirm the application before ordering

Material Comparison: Traditional Brazed Tungsten Carbide vs. Diamond (PCD) Router Bit

＋Typical industry data for reference. Actual results depend on the workpiece grade, machine condition and feed rate.

Property	Traditional Brazed Tungsten Carbide Router Bit	Diamond (PCD) Router Bit
Cutting material hardness	1,500–2,000 HV	7,000–9,000 HV
Edge life on MDF / particleboard	Baseline (1×)	15–20× longer edge life
Edge life on solid wood	Baseline (1×)	10–13× longer edge life
Edge life on acrylic	Baseline (1×)	10–15× longer edge life
Regrinding / refurbishing cycles	2–4 times	5–8 times
Cut edge quality	Ra 0.4–0.8 µm, more fuzzing	Ra 0.2–0.4 µm, cleaner edge
Thermal conductivity	≈ 100 W/m·K	≈ 500 W/m·K, heat cleared faster
Friction coefficient	≈ 0.3	≈ 0.05–0.1, lower cutting force
Chipping risk on brittle panels	Higher at high feed	Lower, stable edge at high feed
Cost per metre of cutting	Higher over long runs	Lower over long runs

Delivery Scope

Each tool is packed in an individual plastic box.

＋Each order also includes an inspection record. Custom configurations are produced after the workpiece material, machine model and required dimensions are confirmed.

Why Choose VPOINT

＋VPOINT supports this series with:

One-year warranty on every router bit
Custom and non-standard diameters, cutting heights and shanks produced to order
Regrinding service to extend tool life
Factory direct since 2008, ISO 9001 certified
Dual manufacturing bases in Sichuan and Dongguan, China

Precision & Quality Control

＋Every pierce & roundover bit is inspected before shipment: cutting diameter, shank diameter, cutting height and tool runout are checked against the specification table at micron level. Production follows an ISO 9001 process with batch traceability, so reorders match the original configuration.

Specifications

The table below is transcribed from the original product chart. Part no. and reference size retain the source notation; D is cutting diameter, H cutting height and R radius, in millimetres. Each row is a separate configuration; confirm the final specification and availability before ordering.

Part no.	Reference size (in.)	D (mm)	H (mm)	R (mm)
LH0401W0604	1/4 × 1/4	6.35	6.4	2.38
LH0401W0704	1/4 × 5/16	7.96	7.96	2.77
LH0401W0904	1/4 × 3/8	9.52	9.5	3.17
LH0401W1204	1/4 × 1/2	12.7	10	6.35
LH0401W1508	1/2 × 5/8	15.9	25.5	3
LH0401W1504	1/4 × 5/8	15.9	11	7.95
LH0401W1902	1/2 × 3/4	19.05	11.8	9.52
LH0401W2202	1/2 × 7/8	22.5	23.7	6
LH0401W2502	1/2 × 1	25.4	13.5	12.7
LH0401W2802	1/2 × 1-1/8	28.6	14	14.3
LH0401W3402	1/2 × 1-3/8	34.9	14	17.45
LH0401W4102	1/2 × 1-5/8	41.27	17	20.63
LH0401W5002	1/2 × 2	50.8	20	25.4
LH0401W6302	1/2 × 2-1/2	63.5	17	31.8

Original specification chart with 14 configurations

Frequently Asked Questions

Which sizes are available?

＋Fourteen configurations from 6.35 mm to 63.5 mm cutting diameter with radii from 2.38 to 31.8 mm. Reference shank sizes run from 1/4 × 1/4 to 1/2 × 2-1/2 in the source notation.

How does one bit both pierce and round over?

＋The piercing section cuts through the board and the roundover profile machines the aperture edge to radius R in the same setup, so the opening and its edge finish stay consistent.

What must be confirmed before ordering?

＋The board thickness, aperture dimensions and required edge radius, plus the spindle or collet interface, cutting direction and machine clearance.

Can you produce a non-standard radius?

＋Yes. Send the item code or required profile drawing, tool dimensions, workpiece material, machine model, cutting direction and quantity, plus a reference photo or current-tool drawing.

＋Key words: PCD pierce roundover bit, slot cutter router bit, aperture rounding bit, diamond pierce router bit