Oil immersion is a miscroscopic imaging technique that yields excellent imaging results. However, the price of the chamber required to keep the microscope lens' coverslip in place and contain the oil is prohibitive. That is, it was prohibitive until Ben Goodnow of EMBL Australia Node stepped in to design an affordable, more flexible version of the LCI Chamlide microscope chamber for the University of New South Wales. The chamber's files are available, and so is a detailed paper that summarizes the entire design and 3D printing process. So if you would like to conduct research using the oil immersion microscopic technique, it has been made more possible in a process that cut costs by 1/50 of the original chamber price. Read more at 3DPrint.com: https://3dprint.com/130143/3d-printed-microscope-chamber/ ‎