Recent content by Dualkit

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    Who makes best 5c collets

    The Swiss collets I was getting from S & M had carbide pads, that could have been why they were making them to order, they definitely aren't rare, they stopped stocking them years ago it seems. S & M was cheaper than Hardinge, but the lead time was the killer. Have you looked at Lyndex? Back...
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    Who makes best 5c collets

    Last I checked S&M was making the Swiss collets I use to order and quoted 5-6 week lead time, so I started getting them from Hardinge.
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    Who makes best 5c collets

    Last I bought from Hardinge they shipped a collet and bushing set, smaller than 5c's in two separate boxes and charged me $45 for UPS ground for a 300 mile trip. I was shocked when I looked at the shipping charge.
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    My first optical comparator (almost iso9001 now!)

    Comparing it to the vehicle it looks like a floor model, not a desk top. I was offered a floor model for free before I moved to Virginia, it even had the axis motors, nice and clear. I knew it was heavy and when it bent the axle on my heavy duty dolly I gave up. On yours I would have used an...
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    118° or 135° for larger HSS drills?

    Yes, or so it seems.
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    118° or 135° for larger HSS drills?

    135 cuts with less pressure but more likely to walk, 118 cuts with more pressure but is more likely to stay on center.
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    At what point does drill length become an RPM limit?

    I have found if you get too long and skinny it is faster to use multiple drills because the long shank in free air can flex.
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    How to for this spacer....

    You can do a pre plunge like .003 over a little more than the champer depth and the tool won't deflect.
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    Hitachi Seiki 4AII Turret Lathe $2000 OBO

    I still see that they are running the same tight ship in the for sale section at PM, NOT! I guess the OP didn't get the message about manual turret lathes not being worth a bucket of chewing tobacco spit these days. I own one, when I die I will have a friend put a sign on it, runs good, comes...
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    Specific tools to use.......

    I would just punch that bore out with a 2 flute end mill and finish with a boring bar. There probably will be jobs that swarf will dictate different approaches. I have found on a part that size I would go .160 deep on diameter, feed rate of .020, 2,000 rpm for roughing passes, that breaks the...
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    Specific tools to use.......

    Do not buy any Chinese 6061, paying more for domestic is well worth it for production lathe work.
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    Has anyone made a thread mill?

    I actually know someone close to you but he isn't one of the favor trading type. If it was me I would make you one on my CNC as long as you were buying the pizza and beer.
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    How do I bore this wheel??

    If you haven't done it before two flute end mills are great for roughing out the front side of that bore and similar ones on a lathe.
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    How do I bore this wheel??

    You could use an I.D. groove tool, insert style for more projection, but I think you will have chip wrapping issues causing deflection or bad finish.
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    Has anyone made a thread mill?

    You should list your location in case someone here is close by.
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