Hey there guy!
I uploaded my video using linseed oil on a powder graphite to creata a smooth graphite black background for your drawings and sketches.


Check this out!!

Ps: linseed oil is nontoxic however you should be careful on disposing the tissues and clothes the your using to wipe the mixed graphite and linseed oil as this kind of oil is a self heating substance that can cause fire.
Please ensure to dispose your waste properly