Hello all. I have been looking for a porter cable milling attachment for my horizontal mill for some time now and not having much luck. So I decided to build one but I am having a heck of a time finding any plans or measurements to even begin looking for materials. Is there anyone on here that can help or point me in the right direction? I have a very old United States Machine co horizontal mill model #1. With the milling head it would be a lot more versatile. Thanks Tony