This paper reviews the past, present and possible future of molten aluminium inclusion removal technology. Filtration technology is far from a stagnant field. Methods used to remove inclusions from the melt are selected on the basis of the product requirements, operating and capital costs of the method, ease of use and reliability of the method. The basic principles of inclusion removal for settling, floatation and filtration are reviewed along with an overview of current typical practice. New developments such as cyclones, MHD priming, vacuum assisted filtration and combo filters are described. Some ideas that have fallen by the wayside like “sticky” filters and use of Lorentz forces to increase filter efficiency are re-examined. The potential for new filter structures utilising 3D printing methods to achieve high efficiency at low head loss is highlighted.