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A1 Retarder

A1 Retarder

MR Resin

£4

A1 Retarder can be used to extend the processing time of the Base material. Always add A1 Retarder to the A1 Liquid, limiting the amount used to a maximum of 2% of the total weight.

MR Resin's own words, read from their page.

Buy from MR RESIN LIMITEDMR RESIN LIMITED is a UK retailer, not the maker. Price seen 2026-09-21. Not an affiliate link, we earn nothing from it.

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