Adding a horizontal spindle to a vertical mill

[tonyfoale]

A little while back I made a post here showing how over six decades ago I converted a horizontal mill to a vertical machine, see Ancient horizontal to vertical mill conversion.

This time I did the opposite. i.e. I added a horizontal spindle to a vertical milling machine. This time it was done during last week not decades past. Although I did this on a Bridgeport base the same techniques could be used on many other milling machines. I attach a PDF file with full details of the work. Included here are some photos without explanation, to pique your interest. Explanations are all in the PDF file.

Click images for full size.