The August edition of TLT is here and it brings some good reading on metalworking fluids. Specifically, as the title states, the article explores the challenges of formulating a good metalworking fluid where the key requirements are especially difficult to balance. The ingredients required to maintain a biostable environment tend to cause staining. Beverage cans have long been the kings of aluminum use. Aircraft parts have been moving to titanium but automotive parts are now the second largest users of aluminum. The article is really well presented in our opinion. It takes the reader from ore to beer can with a history of the metal's discovery and development. If you're involved in the machining of aluminum, you will want to read and re-read this basic introduction to the metal that matters to you. TLT is published by STLE - a not for profit organization.