Handy Tip for Artists, Recyclers and Neat Freaks! I have a follow-up to the Citra-Sol method for creating fabulous background pages and collages. I bought a big bag of navel oranges and realized I had the ingredients to make my own solvent! Simply take a clean glass jar, peel the rind from the oranges and place all the rind/peels, without the pulp (tangerines, oranges, navels) into the jar. Pour enough vinegar over the peels to cover them. Allow the jar to sit for a week or two and VOILA! You have made your own solvent for literally pennies. You will notice the liquid getting a bit thicker than the plain vinegar and it does not smell bad!!! I now have a HUGE jar on the window sill! Be careful and only use this after testing on a safe spot.