Robert Sorby 831H Diamond Parting Tool

Thomas Flinn & Co

£74.22

The Robert Sorby 831H Diamond section Parting Tool has a special profile that reduces the risk of binding in the cut. It also reduces the amount of heat build up caused by friction, thereby lessening the chance of burning the bottom of the parted off project. The blade area is 3/16 (5mm) with a handle length of 10 and overall length of 17 . Available both with and without the handle.

Thomas Flinn & Co's own words, read from their page.

Buy from www.flinn-garlick-saws.co.ukwww.flinn-garlick-saws.co.uk is a UK retailer, not the maker. Price seen 2026-09-19. Not an affiliate link, we earn nothing from it.

Where this comes from

The part other shops don't tell you. Three separate questions, kept separate on purpose, each with its source.

UK company
Registered at Companies House as THOMAS FLINN & CO LIMITED, number 09293748. Checked 2026-08-29.
Means the business is a British legal entity, not a British-sounding name owned elsewhere. It says nothing about where anything is made.
UK operations
Stated by the company: "Our family have been producing saws and hand tools in our Sheffield factories since 1923." Source.
Means people employed here, or premises they actually work from. We keep this separate from the company badge because a registered office can be an accountant's spare room, and a company can be registered in Britain while everything it does happens somewhere else. Where we have not looked, we say so rather than assuming.
British-owned
No majority shareholding traced outside the UK. Companies House.
Read from the register of people with significant control, following the chain of holding companies. It does not gate anything: a firm can be made here and owned elsewhere, and that is worth telling you rather than hiding.
Where it is made
The maker doesn't say, so neither do we.
This is about the individual product, not the company. A British firm can sell things made abroad, which is normal and not a criticism. We would rather tell you which is which than average them into a score.