Hey thanks Raney,
That reminded me of a FWW article where the author makes a metal screw version of this.
The link you posted is great and the site includes an article about making a jack plane that mentions a wooden handplane body finish method that George Wilson posted some time ago.
http://www.cornishworkshop.co.uk/wwjackplane.html
It involves plugging the mouth of the plane and flooding it with BLO. Look in the lower right corner of the scan.
Here is a link to that old thread. Look for George Wilson's post.
http://www.sawmillcreek.org/showthread.php?t=107996