I only used to use their thinners when spraying, for brush wok and washes I used Daler Rowney "Low Odour Thinners" and for cleaning cellulose thinners worked well. You could get away with white spirit though.

I use white spirit to thin Humbrol paint, and it has not affected the gloss finish. For cleaning paintbrush, I use cellulose thinner.

Jan

Any solvent can have a matting effect as it speeds up the rate of drying. When I used to do a lot of figure models I often used artist's oil paints which if allowed to dry naturally are far too glossy and thinning was not desirable as the coats being applied were so thin anyway that the trick to getting a matter finish was to false the drying by placing in a box with a light bulb as the heat source.

I have always used Art Shop thinners to thin Humbrol Gloss Enamels. I was once told by a sign writer (my cousin) that diy type white spirit is too harsh, OK for brush cleaning but not for thinning decent quality paint.

Edited By Ron Laden on 10/01/2021 10:40:04