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%20Detroit%202011/100_1389.jpg David Smith Michigan, USA -- You received this message because you are subscribed to the Google Groups "hurdygurdy" group. To post to this group, send email to [email protected] To unsubscribe from this group, send email to [email protected] For more options, visit this group at http://groups.google.com/group/hurdygurdy The rules of posting, courtesy, and other list information may be found at http://hurdygurdy.com/mailinglist/index.htm. To reduce spam, posts from new subscribers are held pending approval by the webmaster.
