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ecule could be created using waste cooking oil.Using old cooking oil from a local McDonalds restaurantclose to a campus,Professor Simpson and his research team ap-plied a one-step chemical process in the lab,using about one literof used cooking oil to make just under half of that amount in res-ins.The resins were then used to print a plastic butterfly thatwas structurally and thermally stable.This means that it won'tmelt above room temperature.Speaking to Goodnet,Professor Simpson outlined his highhopes for the creative and cheaper route to recycling that wastecooking oil,"Normally 3D printing resins come from fossil fuels,but by recycling used cooking oil into a high value product,wehope it will reduce the financial barriers,which should be a win-