The first part of the lead screw assembly is the apron. This is a pretty simple part as it is only a rectangular casting. In this view you can see that I have already drilled the hole for the split nut mechanism.
The lead screw is supported by some bearing blocks on each end. I made mine as a one piece design and bored out the hole for the bushing on a mill. I also made the bushing from solid stock on a lathe rather than the pipe method Gingery describes. The gold colored pieces are shaft collars that I bought at my local hardware store. On the other end with where the handle attaches. I made the handle from a piece of 3" aluminum round and a cut-off bolt for the handle. I need to make something a little bigger for this handle, as it seems that this one is not quite large enough.