On Mon, Jul 11, 2011 at 11:35 AM, David <dtsmithn
...@gmail.com> wrote:
> Hi Scott, Here's how I make the tangent posts round. I solder a
> 10-32 nut onto the end of a 2" piece of 1/4" diameter brass tubing.
> The brass tube is then inserted into an electric drill. I then grab
> the tangent flag with a pair of pliers that has tape wrapped around
> the ends and push the rough cut tangent post into the spinning nut.
> The sharp threads will then cut threads into the tangent post. Then
> pull the post out of the nut and the sharp threads will rip the sides
> off of the threaded post and produce a clean and very circular post. I
> add a slight taper to the posts by lightly sanding with sandpaper.
> This works well for key holes of 5/32". Here is a photo that better
> explains the process.
> http://i205.photobucket.com/albums/bb5/dtsmithnet/Maker%20Faire%20Det...
> David Smith
> Michigan, USA
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