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| Tailstock Die guide |
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| Russel:
--- Quote from: Bernd on November 13, 2009, 09:14:58 AM ---...the third picture down shows that you parted off a 1.25" diameter piece. Also at the point where you cut it off, way past the chuck using a steady rest. I'm thinking if this doesn't prove to people that such can be done on a small machine as the Sherline, it surely can be done on a much bigger machine. --- End quote --- The more I use these little Sherline machines, the more I like them. 1.25" is about the biggest size I will part off. I use a machinist square and very carefully make sure the cut off tool is straight, the three jaw chuck is nice and snug as well as the steady rest. The steady rest is as close to the end of the part as I can get it. The gib sticks out a little on that side of the saddle. Notice all the grease on the steady rest and the cutting fluid on the part. I'm never shy with the lube when using the cut off tool, although it is a PITA to clean up afterward. It's kind of funny...I must have spent an hour last night going over Dean's website. There is some very fine work there! I kept thinking to myself: I can do better! Thanks for the nice comments, Russ |
| Gerhard Olivier:
Nice work on that and good job with parting the Ali -- I would rather part mild steel that ali myself, I use the band-saw mostly for parting ali. ANy tips would be welcome. Gerhard |
| Russel:
Today I only had time to cut the grip and drill and tap a 8-36 for securing the dies. I removed the 4 jaw chuck from the lathe and mounted it to the Sherline CNC rotary table and mounted it to the mill with the vertical mount. Everything set up square, used a edge finder to zero on the end of the part and center the part. I was thinking that I would use a .250 ball end mill, but after thinking about it I decided to go with a 3/32 ball end mill and 30 divisions on the part. Here is me attempting to get an idea how it would look. Here is after the cuts. A little crude and course. I should have used the 1/8 ball end mill with about .015 depth, instead of the 3/32 with .030 depth. Oh well, this is the first time I have tried this and hopefully it will look better next time. I does, of course, provide plenty of grip for turning the die by hand. Then, I spot drilled, drilled and tapped for the 8-32 screw that will hold the die in place. And again, a test fit with a 13/16 die. Almost done, but that's it for today. Russ |
| Bernd:
--- Quote from: geroli on November 13, 2009, 02:13:56 PM ---Nice work on that and good job with parting the Ali -- I would rather part mild steel that ali myself, I use the band-saw mostly for parting ali. ANy tips would be welcome. Gerhard --- End quote --- I use Tap Magic when parting off on my Sherline or 10" Logan, Works great. The other secrete is as Russel stated. The tool being square to the work. Bernd |
| Bernd:
Russel, Nice looking grip. It has got to be more comfortable than a knurl. Bernd |
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