How hard is the cutting material?

The carbide grade used in this pcd straight bits with bottom tip 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 straight bits with bottom tip 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 Straight Bits With Bottom Tip

Straight bits with a PCD bottom tip clean and smooth pre-cut dadoes and handle compatible resurfacing work on CNC woodworking machines. Fourteen configurations cover cutting diameters from 5 to 20 mm with cutting heights from 12 to 30 mm, all on 12.7 mm shanks with 2 teeth.

Product Description

PCD Straight Bits With Bottom Tip for CNC Woodworking — a VPOINT PCD straight router bit for flat-bottom grooving and spoilboard work, sized for MDF and similar workpieces. Start near 20,000–24,000 rpm / 10–15 m/min (standard reference values in the performance table below); the specification table lists diameters, cut lengths and shanks. Diamond edges hold 15–20× carbide life on abrasive panels. ISO 9001 production, batch-verified, custom sizes from drawings.

PCD Straight Bits With Bottom Tip for CNC Woodworking

Design and Construction

＋The straight flutes and the PCD bottom tip are carried on a 40Cr chrome-molybdenum steel body. The bottom tip is a separate polycrystalline diamond cutting edge brazed at the end of the tool, so both the flute edges and the tool centre cut. The series is produced in the Sichuan and Dongguan, China manufacturing bases.

How It Works

＋The straight flutes shear the walls of the groove while the bottom tip cuts at the centre of the tool, where straight flutes alone leave a nub. Plunging into the pre-cut dado, the bit planes the floor smooth and squares the groove bottom in one pass. Compare cutting diameter and height with the existing groove and required depth before machining.

Applications

Cleaning and smoothing pre-cut dadoes
Compatible resurfacing work
For compatible CNC woodworking machines, engraving machines and routing machines

Suitable Materials

Wood, MDF, plywood and composite workpieces
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 straight bit with bottom tip 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 specification chart. All dimensions are in millimetres. D is cutting diameter, H is cutting height, d is shank diameter, L is overall length and Z is tooth count. Each row is a separate configuration.

Item code	D (mm)	H (mm)	d (mm)	L (mm)	Z
LH04001	5	12	12.7	62	2
LH04002	6	15	12.7	63	2
LH04003	6	20	12.7	68	2
LH04004	8	15	12.7	63	2
LH04005	8	20	12.7	68	2
LH04006	10	20	12.7	68	2
LH04007	12.7	22	12.7	67	2
LH04008	12.7	30	12.7	75	2
LH04009	16	20	12.7	65	2
LH04010	16	30	12.7	75	2
LH04011	18	20	12.7	65	2
LH04012	18	30	12.7	75	2
LH04013	20	20	12.7	65	2
LH04014	20	30	12.7	75	2

Original specification chart with 14 configurations

Bottom tip profile with D, H, d and L dimensions

Performance Data

Standard reference values for guidance only — always adjust to machine rigidity, clamping and tool wear, and confirm on the actual workpiece.

Material	Typical spindle speed	Typical feed	Notes
MDF	20,000–24,000 rpm	10–15 m/min	PCD holds edge on abrasive MDF
particleboard	18,000–22,000 rpm	8–12 m/min	Grit-resistant diamond edges

Frequently Asked Questions

Which diameters and cutting heights are available?

＋Fourteen configurations with cutting diameters from 5 to 20 mm and cutting heights of 12, 15, 20, 22 or 30 mm. All use a 12.7 mm shank with 2 teeth; overall length runs from 62 to 75 mm.

Why does a straight bit need a bottom tip?

＋Straight flutes alone leave an uncut nub at the centre when plunging. The brazed PCD bottom tip cuts at the tool centre, so the groove floor is finished square and smooth in one pass.

What is the difference between this and the bottom cleaning series?

＋Both clean dado floors. The bottom cleaning series is a dedicated floor-planing geometry in larger diameters (15 to 60 mm); this series adds straight-flute wall cutting in smaller diameters (5 to 20 mm).

What should I send for selection?

＋The groove width and depth, workpiece material, machine model, collet size and spindle limits, plus a drawing or photo of the current tool where available.

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What feed should I start with on MDF?

＋Begin near 10–15 m/min at 20,000–24,000 rpm. Straight PCD flutes cut without lifting the panel, so a steady moderate feed gives the cleanest flat bottom; tune by chip load.

Why choose PCD for straight-flute work?

＋On abrasive MDF and particleboard the diamond edges last 15–20 times longer than brazed carbide (typical industry data), keeping the groove width constant across long runs.