Since joining TechShop I have been learning about machining on the vertical mill. One of the biggest challenges for me has been figuring out how to clamp work that doesn't fit easily in to the vice. While perusing "Practical Ideas... for Metalworking Operations, Tooling, and Maintenance, McGraw-Hill, 1984", I found an interesting idea that would help quickly align work right on the mill table using the T-slots.
The stop uses the squared wall of the T-slot to align the machined face of the stop, which is then clamped in to place with bolts in the stop itself.
It is easy to make and gave me some experience working with stainless steel.
I made it at TechShop