differences between talc, lime and chalk as an additive to oil paint
WEBNov 9, 2018 · When it comes to Mr. Velasquez' CSO oil and painting mediums, high calcium lime is inappropriate. High calcium lime (quicklime, or calcium oxide) is alkaline, very hygroscopic and will also absorb CO2 from the air. It is not stable until it 'morphs' into its crystalline form, limestone. So mixing CSO cleaned flax seed oil with dry 'lime ...