PF 540 (Jim Robison Crank)

Valentine Clays Ltd

£17.25

PF 540 Jim Robison Crank is a heavily grogged coarse crank clay specifically developed for renowned sculptor Jim Robison. This robust clay body is designed to meet the demands of creating large, textured sculptural pieces. Made from highly plastic, iron-bearing ball clays, PF 540 offers low shrinkage and exceptional workability. Its unique formulation makes it ideal for ceramic murals and figurative work, providing the strength and durability required for substantial artistic creations. PF 540 fires between 1180°C and 1300°C and is suitable for both oxidizing and reduction atmospheres.

Valentine Clays Ltd's own words, read from their page.

Buy from Valentine Clays LtdPrice seen 2026-09-04. Affiliate link.

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 VALENTINE CLAYS LTD, number 04610423. 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
Not yet checked.
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.