How hard is the cutting material?

The carbide grade used in this diamond straight bit-cleaning bottom delivers 7,000–9,000 HV / 1,500–2,000 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 diamond straight bit-cleaning bottom 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.

Diamond Straight Bit-Cleaning Bottom

PCD straight-flute bits (Z1/Z2), D 4-12.7 mm, shank 12.7 mm, cutting height 12-15 mm. Flat-bottom slots with square corners for cleanup, slotting and mortise work.

The VPOINT Diamond Straight Bit-Cleaning Bottom is a carbide woodworking cutting tool. Ideal for bottom cleanup after through-cutting, slot and groove cutting and mortise and tenon slot work.

Product Description

The VP0018 series straight bit pairs a solid PCD cutting edge with a 40Cr chrome-molybdenum steel body in a straight-flute, flat-bottom geometry. Diameter, shank and cutting length follow the specifications table and are produced to order.

Design and Construction

The VP0018 series straight bit pairs a solid PCD cutting edge with a 40Cr chrome-molybdenum steel body. The straight-flute geometry cuts a flat-bottomed slot with square corners; one- and two-flute (Z1/Z2) configurations are offered. Cutting diameters (ØD) run 4 to 12.7 mm with a 12.7 mm shank (Ød) and 12 to 15 mm cutting height (H), covering fine slotting through general cleanup work.

How It Works

Straight flutes cut a flat-bottomed slot with square corners — the geometry needed for cleaning the bottom of through-cuts, trimming operations and mortise work. The PCD edge holds the corner radius and the flat bottom in abrasive faced boards, keeping slot depth and width constant.

Applications

Bottom cleanup after through-cutting
Slot and groove cutting
Mortise and tenon slot work
Trimming and sizing passes

Suitable Materials

Melamine-faced particleboard and MDF
Laminate (HPL) sheets
Veneered plywood
Solid wood

The PCD edge holds square corners and a flat bottom in abrasive sheet goods, keeping slot geometry stable across long production runs.

Material Comparison: PCD vs. Tungsten Carbide

The figures below are typical industry data for production woodworking. PCD does not replace carbide in every job — carbide remains the right choice for steel, cast iron and low-volume general work — but on abrasive sheet goods the difference in service life is decisive.

Property	PCD Diamond (This Tool)	Tungsten Carbide
Hardness	7,000–9,000 HV	1,500–2,000 HV
Tool life on MDF / particleboard / melamine	15–20× longer (500–1,200 h)	30–60 h (baseline)
Tool life on solid hardwood	10–13× longer (800–2,000 h)	80–150 h (baseline)
Tool life on acrylic / plastics	10–15× longer (1,000–3,000 h)	100–200 h (baseline)
Resharpening cycles	5–8 regrinds (thick tips up to 10); each pass removes only 0.2–0.3 mm of diamond	4–6 regrinds, each removing more material
Surface finish	Ra ≤ 0.2 μm achievable, stable over the tool life	Ra ~0.8 μm typical, degrades as the edge wears
Thermal conductivity	540–560 W/m·K — heat leaves the edge fast	~80 W/m·K
Friction coefficient	≈ 0.05 — lower cutting forces	≈ 0.3
Suited for	Abrasive engineered wood, laminates, composites, plastics, non-ferrous metals	General-purpose; the only choice for steel and cast iron

Figures are typical published values; actual tool life depends on the workpiece material, feed rate, depth of cut, machine condition and maintenance schedule.

Delivery Scope

Single cutter. Order by part number with the diameter and flute count stated in the specifications table below.

Why Choose VPOINT

One-year warranty on every cutter — defects in material or workmanship are covered for 12 months from delivery.
Custom tooling — geometries, diameters, cutting lengths and shank configurations built to your drawing or sample.
Non-standard fabrication — profiles and sizes outside the standard catalogue, including profile restoration and special applications.
Resharpening service — cutters return to service after regrinding, restoring near-original edge performance at a fraction of new-tool cost.
Factory-direct since 2008 — ISO 9001 manufacturing in Sichuan and Dongguan, China; 40Cr chrome-molybdenum steel bodies; no trading intermediaries.

Send a drawing, a sample or a worn tool, and our engineering team will quote the exact specification you need.

Precision & Quality Control

Every cutter is inspected at micron level before shipment. Cutting edge condition, cutting diameter (ØD), shank diameter (Ød), cutting length (L1) and overall length (L) are measured against the values listed in the specifications table, and cutting edge runout and concentricity are verified on the assembled tool.

Tools measuring outside tolerance are reground or scrapped — they do not ship. Inspection is performed under our ISO 9001 quality system, with batch records retained for traceability.

Specifications

Part No.	ØD	Ød	H	Z
VP018116	4	12.7	12	1
VP0018117	6	12.7	12	2
VP0018118	8	12.7	15	2
VP0018101	9	12.7	15	2
VP0018102	10	12.7	15	2
VP0018103	12	12.7	15	2
VP0018119	12.7	12.7	15	2
VP0018104	15	12.7	15	2
VP0018105	20	12.7	15	2
VP0018106	22	12.7	15	2
VP018107	25	12.7	15	2
VP0018108	30	12.7	15	2
VP0018109	32	12.7	15	2
VP0018110	35	12.7	15	2
VP0018111	38	12.7	15	2
VP0018112	40	12.7	15	2
VP0018113	45	12.7	15	2
VP0018114	50	12.7	15	2
VP0018115	55	12.7	15	2

Frequently Asked Questions

What is the Diamond Straight Bit-Cleaning Bottom used for?

The VP0018 series straight bit pairs a solid PCD cutting edge with a 40Cr chrome-molybdenum steel body.

How do I choose the right size?

Refer to the specification table on this page: part numbers fix the cutting diameter, shank and cutting length. State the diameter, shank and cutting length you need when ordering.

Which materials does it suit?

Typical materials include Melamine-faced particleboard and MDF, Laminate (HPL) sheets, Veneered plywood. Confirm the material grade and machining conditions for the specific tool before ordering.

Can I order a custom version?

Yes. Send the profile drawing or item code together with the workpiece material, machine model, cutting direction and quantity. Tools are produced to order, and each tool is packed in an individual plastic box.

Key words: PCD straight router bit, diamond straight flute bit, flat bottom cleanup cutter, slotting router bit