| Marty's
Canadian Made Jet Lathe. Tailstock is replaced by Bonnie
Klein type threading machine. Note the adaptor for the chuck.
Princess auto has a version of this machine for metal turning that some of you engineers might like to try to adapt.. |  |
| After accurately determining center of the stock, the blank is mounted on the club's lathe. |  |
| The blank is smoothed and the lid and body sections marked. |  |
| The body is parted off and the lid is ready for hollowing. |  |
| Close up of the business end of the threading tool mounted in the headstock. |  |
| The
hollowed top is mounted in the Jet by simply removing the chuck from
the club lathe headstock and remounting it on the fixed threading
machine. Marty is about to thread the internal lip of the box. |  |
| He first cuts a relief at the top of the lip (not shown) |  |
| The cutting wheel in place. |  |
| Moving the wheel out in small smooth increment creates the internal threads. |  |
| The
body of the box has been hollowed slightly (time did not permit
complete hollowing), and again the chuck was remounted on the threading
machine. |  |
| After
a relief was cut on the outside of the inner lip, the thread was cut in
two passes. The first pass is seen in the above photo. |  |
| Refining
the details on the outside of the box. With the threads,
there is no need to bring up the tailstock for finishing. |  |
| The finished box completed within the allotted time.
Had there been more time, no tool marks would be obvious.
The finished product was donated for the club 50/50 draw.
Thanks again Marty!!!! |  |