| Gallery, Projects and General > How do I?? |
| Question for the PRE-CNC machinists |
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| andyf:
Scott, this is probably overcomplicating it: Rig up a sturdy table behind the lathe, and bolt a template down to it, with a straight edged plate on top, the plate being fixed independently of the template so the plate can be moved without disturbing the template. Fit a finger on the back of the cross-slide, so it bears on the template and straight-edge. Start with the straight-edge positioned so that only the "peaks" on the template are exposed. Take a cut, traversing the carriage with one hand and using the other on the cross-slide handle to keep the finger in contact. For the next cut, move the straight-edge back a bit to expose a little more of the template. Repeat, moving the straight-edge back a little bit more, and so on until the troughs on the template have been fully exposed. Then start on the next piece of stock, and carry on until boredom sets indo it all over again. A more sophisticated table would have a feedscrew to take it, with template attached, a little further way from you between successive cuts. That would avoid fiddling with a straight-edge, which wouldn't be needed. Andy |
| picclock:
@ Andyf Wouldn't it be simpler to just move the pattern into the work ? Best regards picclock |
| SemiSkilled:
Saw this on another site, not my work. Food for thought. Lee |
| SPiN Racing:
Ohhh very nice! I have done some more research.. and lathe duplicators seem to be the term.. mostly wood lathes though. That looks like a nice piece.. but how do you control the depth is my question.. since its a compund curve.. here is one that is nice for like.. brass. but I would be chicken to hold that in my hand with stainless steel. http://plsntcov.8m.com/Duplicator.html |
| John Stevenson:
Spin, Take a look at this machine I did yesterday. http://bbs.homeshopmachinist.net/showthread.php?t=48916 John S. |
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