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Thread: laer pin?

  1. #1
    Join Date
    Jun 2010
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    NC
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    101

    Default laer pin?

    Hey guys, just got the 8x12 from HF and already have a question. I want to take the leadscrew off and it has 2 screws and according to the manual 2 laer pins on the tailstock end, I've never heard of laer pins. The pins appear to be drilled and threaded. What are they for and how do they come out?

    Thanks, Jim Doherty

  2. #2

    Default

    Interesting. I've never heard of pins called that either, but there are threaded dowel and taper pins. If that's what they are, the thread enables you to jack them out. Put a spacer over the hole to allow space for the pin to be pulled into, then use a screw, nut, stud, or whatever is appropriate to extract the pin.
    .
    "Be thankful you don't get all the government you pay for." Will Rogers

  3. #3
    Join Date
    Dec 2008
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    jefferson,georgia
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    105

    Default

    Thats a new one on me too.Would there be some advantage to a threaded pin versus a roll pin,or even a bolt? (provided theres enough clearance)

  4. #4
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    Jan 2008
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    Phila PA
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    Default

    yes, a threaded dowel pin, like a regular dowel, sets a location, but is easily removed from a blind bottomed hole. A bolt doesn't set location, and a roll pin isn't as strong or easily removed.

  5. #5
    Join Date
    Jun 2010
    Location
    NC
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    Default

    Thanks TGTool, had to read it twice but makes sense now. I guess I'll need a thread pitch gauge next. I need to disassemble the lathe to be able to carry it into the house either that or I learn to turn metal in the car.

    Thanks, Jim Doherty

  6. #6
    Join Date
    Nov 2007
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    Sturgeon Bay, WISCONSIN (near Green Bay)
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    1,105

    Default

    All this raises a question from me.
    I have some of those tapered pins with the thread inside. I've pulled some just as suggested here.

    I want to install some of these on some modifications I'm working on.

    They are drilled and installed AFTER the alignment is achieved.

    What are these listed as in tool catalogs and are there kits that sell the drills along with an assortment of matching tapered pins?

    There must be a code numbering system for the tapered drill bits and pins?
    John M...your (un)usual basement dweller

  7. #7
    Join Date
    Oct 2002
    Location
    Kirkland, Washington
    Posts
    799

    Default

    Quote Originally Posted by Jim Doherty
    Hey guys, just got the 8x12 from HF and already have a question. I want to take the leadscrew off and it has 2 screws and according to the manual 2 laer pins on the tailstock end, I've never heard of laer pins. The pins appear to be drilled and threaded. What are they for and how do they come out?

    Thanks, Jim Doherty
    Typo? Shear pin?

  8. #8
    Join Date
    Jun 2010
    Location
    NC
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    101

    Default

    I do believe its a typo but they are not shear pins. TGTool had it right I just need to figure out the thread/pitch as its not listed in the manual and HF tech support had no idea either.

    Jim Doherty

  9. #9
    Join Date
    Jun 2008
    Location
    NSW Australia
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    762

    Default

    Quote Originally Posted by Deja Vu
    All this raises a question from me.
    What are these listed as in tool catalogs and are there kits that sell the drills along with an assortment of matching tapered pins?

    There must be a code numbering system for the tapered drill bits and pins?
    Hi,
    There is a numbering system for them both in metric and imperial. They are called taper pins and you use taper reamers after drilling with a normal drill or a tapered drill.
    If you type taper pin or taper reamer into google there is plenty of info out there and they are for sale on ebay as well. If your just doing a couple of holes buy a cheap one as the quality brands can get really expensive.
    Dave

  10. #10
    Join Date
    May 2003
    Location
    52N 122W Western Kanuckistan
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    40,418

    Default

    Sounds like Danish to me. In Danish Laer pin means Master pin. Laer means Master or Teacher but can have multiple contexts where it has different meanings, just as in English.
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