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Carmex Carbide Tiny Tool - Face Grooving with Chip Breaker - MFR-C - BMK Grade - 8mm Minimum Diameter x 3mm Groove Width

SKU:MFR6B3.0L22-CBMK

The Carmex Carbide Tiny Tool is a solid carbide bar engineered for face grooving with a built‑in chip breaker. It’s designed for an 8 mm minimum diameter and a 3 mm groove width, delivering strai... Read more ↓
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ApplicationFace Grooving with Chip Breaker (MFR-C)
Minimum Diameter8
Groove Width (B)3
Groove Depth (T)6
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£34.08
Prices shown ex. VAT
5 days estimated lead time — subject to availability
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Free delivery over £50 ex VAT
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14-day returns
30+ years expertise
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01732 887334
Mon – Thurs 8:30 – 17:30 · Fri 8:30 – 16:30

Description

The Carmex Carbide Tiny Tool is a solid carbide bar engineered for face grooving with a built‑in chip breaker. It’s designed for an 8 mm minimum diameter and a 3 mm groove width, delivering straight grooves for clean, predictable results and easier downstream finishing.

As part of the Tiny Tools family, this BMK-grade bar uses an advanced PVD triple coating to deliver exceptional heat resistance and a smooth cutting experience. It performs reliably with stainless steels and a wide range of materials, making it a versatile, general‑purpose choice for production runs, repair work, and hobbyist projects alike.

  • Straight groove geometry for precise face grooves: Delivers straight, uniform grooves instead of rounded profiles, reducing finishing work and improving part fit and surface consistency.
  • BMK-grade coating for durability and heat resistance: Sub‑micron PVD triple coating provides long tool life and smooth cutting, maintaining performance under higher temperatures and tougher materials.
  • Wide material compatibility for versatile use: Optimized for stainless steels (ISO P30–P50 / K25–K40) and suitable as a general‑purpose tool across a broad range of materials and applications.

This tool supports faster setups, consistent groove quality, and reduced downtime thanks to durable coatings and a design tailored for face grooving with chip control. Whether you’re optimizing a production line or tackling a one‑off project, it helps you achieve reliable, repeatable results with less rework and greater overall efficiency.

Part Numbers

Protool Part Number
MFR6B3.0L22-CBMK
Brand
Carmex
Category
Tiny Tool Inserts
Delivery

Free UK mainland delivery on orders over £50 ex VAT. In-stock items ordered before 4:30pm are dispatched the same working day. Full delivery information.

Returns

14-day returns on unused stock items in original packaging. Special-order and bespoke tooling is non-returnable. Read our returns policy.

Technical Support

Over 30 years of machining experience behind the counter. Call 01732 887334, Mon–Thurs 8:30–17:30, Fri 8:30–16:30.

Trade Accounts

Credit accounts, contract pricing and scheduled call-off orders available for trade customers. Apply for an account.

What time are Protool open?

We are open Monday to Friday between 8:30am and 5pm.

Do you offer Free Next Day delivery?

Yes! We offer Free Next Day delivery via Royal Mail Tracked 24 on all orders over £50 ex VAT*. We also offer Free DPD Local Next Day delivery on all orders over £100 ex VAT*.

We also offer the following:

  • Royal Mail Tracked 24 — £5.90 (FREE on orders over £50 ex VAT*). Order before 4:30pm for next day delivery. No signature required.
  • DPD Local Next Day — £8.00 (FREE on orders over £100 ex VAT*). Standard next day delivery to UK mainland addresses.
  • Royal Mail Special Delivery — £12.50. Guaranteed delivery before 1pm the next working day.
  • DPD Saturday Delivery — £25.00. Must be ordered on Friday before 4pm. Pre-12pm delivery.

For delivery to Scottish Highlands & Islands, Northern Ireland, Republic of Ireland, or overseas locations, additional charges apply. Please see our delivery page for full details, or call us on 01732 887 334.

*T's & C's and exclusions apply. Please see our delivery page for more information on all our services.

Ask our technical team about this tool

Not sure if this is the right tool for your job? Ask us about speeds and feeds, material suitability, holders or alternatives — 30+ years of machining experience on the other end.

Prefer to talk? Call 01732 887334 — Mon–Thurs 8:30–17:30, Fri 8:30–16:30.

Full Range: Carmex Carbide Tiny Tools - Face Grooving - Grade BMK (MFR)

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You are viewing MFR6B3.0L22-CBMK. Click any other SKU to view its full details.

Product SKUMinimum DiameterGroove WidthGroove DepthReachRadiusGradeHolderPriceStock Order
MFR4B0.5L15BMK 50.51.2150.05BMKSIM****H4£26.93 In Stock
MFR4B0.75L15BMK 50.751.2150.1BMKSIM****H4£26.93 5 days
MFR4B1.0L15BMK 511.5150.1BMKSIM****H4£26.93 5 days
MFR4B1.5L15BMK 51.52.8150.1BMKSIM****H4£26.93 5 days
MFR4B1.5L15-CBMK 51.52.8150.1BMKSIM****H4£29.60 5 days
MFR4B1.5L17BMK 51.53.5170.1BMKSIM****H4£28.25 5 days
MFR4B2.0L17BMK 525170.1BMKSIM****H4£29.60 5 days
MFR5B0.5L22BMK 60.51.2220.05BMKSIM****H5£30.38 5 days
MFR5B0.75L22BMK 60.751.2220.1BMKSIM****H5£30.38 5 days
MFR5B1.0L22BMK 611.5220.1BMKSIM****H5£30.38 5 days
MFR5B1.0L23BMK 612.5230.1BMKSIM****H5£30.38 5 days
MFR5B1.5L22BMK 61.52.5220.1BMKSIM****H5£30.38 5 days
MFR5B1.5L22-CBMK 61.52.5220.1BMKSIM****H5£33.40 5 days
MFR5B1.5L23BMK 61.53.5230.1BMKSIM****H5£30.38 5 days
MFR5B2.0L22BMK 623.8220.1BMKSIM****H5£30.38 5 days
MFR5B2.0L22-CBMK 623.8220.1BMKSIM****H5£33.40 5 days
MFR5B2.0L23BMK 625230.1BMKSIM****H5£31.90 5 days
MFR6B1.0L22BMK 811.5220.1BMKSIM****H6£30.98 In Stock
MFR6B1.5L22BMK 81.52.5220.1BMKSIM****H6£30.98 5 days
MFR6B1.5L22-CBMK 81.52.5220.1BMKSIM****H6£34.08 5 days
MFR6B2.0L22BMK 823220.1BMKSIM****H6£30.98 5 days
MFR6B2.0L22-CBMK 823220.1BMKSIM****H6£34.08 5 days
MFR6B2.5L22BMK 82.54.8220.1BMKSIM****H6£30.98 5 days
MFR6B3.0L22-CBMK Viewing836220.1BMKSIM****H6£34.08 5 days
MFR6B3.0L30BMK 836300.1BMKSIM****H6£32.53 In Stock
MFR8B2.5L22BMK 102.53.5220.1BMKSIM****H8£36.83 In Stock
MFL4B1.5L15-CBMK 51.52.8150.1BMKSIM****H4£25.03 5 days
MFL5B1.5L22-CBMK 61.52.5220.1BMKSIM****H5£28.23 5 days
MFL5B2.0L22-CBMK 623.8220.1BMKSIM****H5£28.23 5 days
MFL6B1.5L22-CBMK 81.52.5220.1BMKSIM****H6£28.80 5 days
MFL6B2.0L22-CBMK 823220.1BMKSIM****H6£28.80 5 days
MFL6B3.0L22-CBMK 836220.1BMKSIM****H6£28.80 5 days

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