This presentation from Compugraphics will guide users through the process of using an outside mask vendor, common photomask terms, cost factors, data format options, and how to communicate your photomask needs using an online ordering system.
Links[1] https://www.mrc.utexas.edu/sites/default/files/images/news/UT%20Workshop_Flyer%20-%2010-7-15_20151009122203_141547.jpg [2] https://www.mrc.utexas.edu/programs/national-nanotechnology-coordinated-infrastructure-nnci