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View Full Version : Another Swing Threading Tool



Boucher
08-16-2010, 04:06 PM
Making a swing type threader similar to John Stevenson’s has been well up on my to do list. Mine uses the Vertical Thread holder for the TNMC 43 NV inserts. I use both the 43 and 32 size vertical inserts and like them. Initially I was inclined to do one on a dedicated tool post rather than on the Quick Change Tool Post. I may still go that way. Using this type holder on a small 12” lathe that is only 1.063 from the top of the cross slide to spindle axis is a little cramped for space. This design uses the 3/4" size tool holder. I prefer the 1” holders but that will have to wait for now. Here is my first go at the Swing Threader.
http://i109.photobucket.com/albums/n50/boucherbyron/SwingThreaderSmall.jpg

This shows the back view of the threader. Bolt placement needed to clear the dovetail of the QC Holder. A longer Shoulder bolt will be installed when it arrives.
http://i109.photobucket.com/albums/n50/boucherbyron/BackSideSwingThreaderSmall.jpg

View showing the parts.
http://i109.photobucket.com/albums/n50/boucherbyron/SwingThreaderPartsSmall.jpg
Parts are fitted pretty close but I will add some sort of indexing. A center punch prick on the washer was used to upset enough metal to take up the small side to side movement. This is for initial test run. I am still thinking on whether to install a brass or Teflon tipped adjustment screw, a key, or a vertical bolt or go back to the mill and skim a few more thousants from the threader body.