This is the jig as I first built it, with a drill guide attached to the end. That doesn't work very well. The jig is made from 1x2s, 1x3s, and MDF for the base, mostly scrap. The eye bolts are used to secure the workpiece. The new router plate makes the centering block obsolete. Yesterday I sank a dozen screws into the jig itself to stiffen it, re-glued the rails, and semi-permanently mounted the pine spacer under the neck.