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7:20 PM
September 19, 2010
Offline
Another way to do it would be to centre drill one end, then chuck the entire length plus a little more, with a dead/live centre in the tailstock, you could then turn it down to the right dimension as long as you don't take too deep a cut, it should be fine. then part off the bit with the centre drill in, and turn the taper on the end, et voila :P
7:21 PM
January 9, 2009
Online
Sorry, I wasn't envisioning the taper when I wrote my approach above, I was thinking more along the lines of a punch, not a scribe.
But for a scribe the process could be accomplished in essentially the same way. Since you'd have a hard time using a steady rest (due to the taper) go ahead and turn the first half inch or so at a taper until the tip comes close to a sharp point. Then pull the part another half inch out of the chuck, keep the taper angle the same, and turn the part until your second taper matches the first. Now you have a 1" taper. Keep going until it's long enough.
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7:24 PM
November 9, 2011
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All right. When you make the actual scribe piece, cut it at 0° from the shoulder to maybe 3/4" out and taper the rest at 2-3° except for the very tip. Cut this at around 30°. I also made my piece a little heftier to avoid too much bending. But go ahead and let it bend some. Just wear your safety glasses and don't over-do it. Run it really fast at 1000-2000. When it bends too much for your liking, slow it way down between 200-500 and finish with a rough file. Then use a fine file until sharp. Then feel free to polish with Emory paper and buff. :)
1:11 AM
January 9, 2009
Online
So you got yours done then? Excellent. Picture?
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5:31 PM
November 9, 2011
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So you got yours done then? Excellent. Picture?
I would but I don't know how to post them. I already tried to copy/paste. They aren't anywhere ion line either so I can't add URL either.
3:31 PM
January 9, 2009
Online
There's a link in my "signature" below that talks about posting pictures. There are written instructions as well as a video walkthrough (for those of us who are visual learners).
You can't copy/paste the images (as you've already found out). You need to upload them to the site's using the insert image button. But the FAQ will walk you through that. It's easy once you get the hang of it.
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- If you are having trouble posting pictures, be sure to visit the FAQ section of the forum for instructions.
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