My Rembrand is stiffer than the others colour...but what is strange it become "hard" after few hour sitted on my glass palet...is that normal?
The "others" won't due the same effect...and the day after it's hard to work with colors that included a large amount of white.
Here's how I proceeded:
Day 1- Rembrant white mixed with SDM white recipe at the right consistency.
Day 2- Re-check the day after...is stiff so I added more SDM
Day 3- Stiff again! Tested a small amount in a clean jar with more SDM and the day 4 has the same consistency of the day 2??? This white drinks like Garry!
Now has a buttery consistency (day 2) and tends to be transparent so I don't want more SDM.
Mixed with others I've the paint that is right ...not too thin...but only for few hours! (This is the primary reason why I painted fast).
I would like to understand where is the error .... Thanks to all for the help.