Magnesium carbonate has been linked to the hygroscopicity of oil paints, especially when used in conjunction with alumni stearate, an additive commonly found in commercial oil paints.
@@ryanstrochinsky611 Fumed silica is not an extender pigment but an additive to control rheology and surface sheen. Glass powder is an extender pigment.
As can be seen and described in this video, 'extender' pigments aren't necessarily bad, but you do see marketing BS sometimes in makers along the lines of, "Unlike some others, We use only pigments and oil!" The intended inference that only the listed coloured pigments are used and nothing else.
It's nice to have a choice of which extenders and when. If it's already in the paint tube, the choice is removed from the artist. Some artists don't mind, others like to have that choice. So I'm glad when paint makers make a point of saying there are no extenders, so I can make an informed decision. Of course, those with extenders could label all the ingredients. That would be nice.
THANK YOU very very much dear Tatiana and George! great great video!
Our pleasure!
Thank you! Very informative. Now I know what to do with my sun thickened linseed oil.
Very helpful. I love your mediums. Oleogel is great when painting portraits.
This videos are so packed with knowledge, thank you so much
Glad you like them!
Thank you as always!
Sorry I missed the live stream. What's your view on the addition of magnesium carbonate?
Magnesium carbonate has been linked to the hygroscopicity of oil paints, especially when used in conjunction with alumni stearate, an additive commonly found in commercial oil paints.
@@RublevColours That's what I was told but I wanted to hear it from a more reputable source. Thanks for your reply.
is fumed silica an extender pigment?
@@ryanstrochinsky611 Fumed silica is not an extender pigment but an additive to control rheology and surface sheen. Glass powder is an extender pigment.
As can be seen and described in this video, 'extender' pigments aren't necessarily bad, but you do see marketing BS sometimes in makers along the lines of, "Unlike some others, We use only pigments and oil!" The intended inference that only the listed coloured pigments are used and nothing else.
There is nothing inherently bad with extender pigments. They have their place.
It's nice to have a choice of which extenders and when.
If it's already in the paint tube, the choice is removed from the artist. Some artists don't mind, others like to have that choice. So I'm glad when paint makers make a point of saying there are no extenders, so I can make an informed decision.
Of course, those with extenders could label all the ingredients. That would be nice.