This is just a short snippet of me making oil paint from pigments and linseed oil. I always thought that making your own paint from pigments is a lot of hassle needing yet another tool (glass muller). But apparently a glass muller is not necessary, you can also mix the pigment and oil with a pallet knife. Some pigments might give a grittier consistency then if the paint was mixed by means of a glass muller, but I don't mind that. I always use my oil paint together with cold wax, and this can give a nice texture.
So I decided to give it a try and bought some pigments and good quality linseed oil (cold pressed).
The pigments look fantastic.
I started with the burgundy pigment.
Make a puddle, pour in a little oil and start mixing with the pallet knife.
If it is still too dry, add a little more oil but not too much in one go, you can always add more if needed. Once you have a nice consistency, that is your oil paint! You can put it in a container or an empty tube which can be bought in the art store. That's all there is to it! Good luck!