Hello again my friends,
I finally got some time to work more on my wooden screw. So here is what I’ve done.
First the layout, same pitch as the tap, I also lay out the groove for the external garter. Then saw to the line. I also used a set of dividers to score a center line between the kerfs.
Next I use a pencil and my fingers as a fence and mark out a quarter inch chamfer around the tip.
I sit on my freshly finished saw bench and use my “Leg Vise” to hold the screw while I rough out the chamfer.
I then smooth out the bevels with sand paper.
Then I started chopping out the threads with chisel and mallet.
After roughing it out I go over it whith a square file and then 80 grit sandpaper glued to a square piece of wood.
I did get it to work, and I almost made it through the nut last night…
It takes a lot of trial and error, putting the screw in, taking it out, knocking down the high burnished surfaces. It kind of sucks, I think will leave this method to Hero and Archimedes. I’m buying a router bit to finish this thing off. The good thing about having done it by hand is that I now have set up “block” for perfectly positioning the router bit. See Carters blog with a detailed video of that jig. http://lumberjocks.com/CartersWhittling/blog/29104
So I will be ordering the bit, I may carve it a little more in the meantime.
Thanks for reading!
-- Mauricio - Woodstock, GA - "Confusion is the Womb of Learning, with utter conviction being it's Tomb" Prof. T.O. Nitsch