Biologische walnootolie - 500 ml voor het aanmaken van olieverf

Does it yellow over time? 
We sell walnut oil because it is less yellowing than linseed oil although there will be slight yellowing over time. When mixing your own oil paint, many people choose to use Hempseed Oil with the white pigments only (instead of walnut or linseed oil), so that the white paint will never yellow. 

A common cause of yellowing is called "dark yellowing" and happens when pieces are stored in the dark for too long. The good news, though, is that placing the art piece back in direct sunlight will reverse the yellowing. This reversal takes anywhere from 1-7 days.

How long does it take to dry? 
Walnut oil dries slowly and can dry to the touch between 4-14 days depending on the humidity of your area, the type of pigment used and how thickly it was applied.

Is it refined? 
Yes. It is pure, expeller pressed walnut oil, so no other chemical or oils are introduced in manufacturing or bottling (when it is refined it is naturally "bleached" with clay which is just a natural filtering for color and clarity and there should be no allergen potential because it is refined). No hexane or solvents are used at all. 

How does it compare to linseed oil? 
You can use linseed oil interchangeably. We use walnut oil because it's higher quality and is less yellowing over time. But linseed oil dries faster which some people prefer. 

How does it compare to poppyseed oil? 
Historically, some painters mixed their white pigment with poppyseed oil instead of walnut or linseed because it never yellows and is the clearest of all oils. 

How does it compare to sunflower oil? 
Sunflower oil can be used but it dries much slower than walnut oil (which already dries pretty slow) and some sources say that it may discolor your painting or yellow over time. 

Is it flammable? 
All natural oils are potentially flammable if left on a rag in a hot area. It's suggested that you store oil soaked rags in a metal bucket with a lid and submerge in water if you're not disposing of them right away. Artists have many techniques of safely storing or disposing of their soiled rags - you'll find a lot of tips on google and artist forums.  

Can it be used for a wood stain? 
Most woodworkers who are staining outside wood furniture just mix our natural pigments with walnut oil and brush it on and then wipe with a dry rag. If you want the paint more opaque just add more pigment or don't wipe with the rag. It will bond well with the wood. It will completely compost and biodegrade because it's just earth and oil. Here's a tutorial with other natural wood staining recipes as well. 

What about clean-up? 

Large amounts of oil or oil paint should be disposed of according to your city’s local ordinances.

To wash oil paint from your hands and body:

1. Use Pinerite Natural Hand Cleaner.
2. Or: Rub a small amount of oil into the paint on your skin, then wipe off with a rag and wash with soap and water.

To clean brushes:

1. Pour a small amount of Eco-Solve* into a glass jar (just enough to cover the brush bristles if you dunk your brush), then swirl your brush until the majority of paint comes off. Finish washing brushes with soap and water.
2. Or: Simply use pure oil, like walnut, to thin your paint and clean your brushes
3. Or: Use Murphy’s Oil Soap from any hardware store.

*You can re-use Eco-solve nearly indefinitely just like regular solvent. After cleaning your brushes, let it sit in a covered glass jar for a few days to a week and then the paint sediment will settle to the bottom. You can carefully pour the "clean" eco-solve that is on top into another container, then the paint sludge left in the jar can be wiped out and disposed of in the trash or washed down the drain if the paint is non-toxic and safe for waterways.