10K Leadscrew Reverse Lever Installed on 9" ABC - Page 3
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  1. #41
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    Paula,

    Thanks for reposting Bruce's pictures. Some of those details are very helpful.

    Does anyone happen to have any measurements for locating the 3/8" hole relative to the hole for the Reverse Lever Shank?

    By the way Paula, I was able to take your template, scale it in Photoshop Elements, and print out an actual size template for my project.

    The Other Bruce

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    Default here is another entry

    Apparently this is not a new idea. I'm not sure I like this approach though.

    http://cgi.ebay.com/South-Bend-9-Met...item439cf155f9

    gp

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    I don't have dimensions for you, but what I did was used a caliper to measure from the edge of the large shank hole to the (approximate) edge of the 3/8 hole, then added half of 3/8 (radius) and drilled purposely undersized. That got me in the ballpark, and after that I used a file to open the starter hole a little at a time to fit precisely around the bolt shank.

    Even though I planned to use the locating pin, I wanted a tight tolerance fit around the bolt shank.

    Then, for my final steel version, I used the aluminum template and a transfer punch. Filing the aluminum wasn't so bad, but that way I didn't have to do a whole lot of filing on the steel.

    Bruce

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    Quote Originally Posted by rbwillnj View Post

    Does anyone happen to have any measurements for locating the 3/8" hole relative to the hole for the Reverse Lever Shank?
    Another method might be to use a transfer screw, or reasonable facsimile, such as a cup-point setscrew. Thread the setscrew into the hole, cup point out, leaving it just barely proud of the surface (might take some fiddling around, or grinding small flats alongside the setscrew point to turn it). Center the plate over the lever shank hole using the lever. Rotate the plate around until the top is level, then smack the plate with a dead blow hammer approximately over the threaded hole. The setscrew should leave a small mark on the back of the plate where the hole needs to be.

    Paula

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    Thanks Paula,

    I was thinking along the same lines, or possibly even turning the end of a 3/8"-16 set screw to a point. Come to think of it, there is a tool used in woodworking to locate holes for dowel pins that might work for this application.

    T.O.B

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    Transfer punches should do what you need, inexpensive sets can be bought @ Harbor Freight or any local tool house.
    Attached Thumbnails Attached Thumbnails g5651.jpg  

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    Quote Originally Posted by Paychk View Post
    Transfer punches should do what you need
    Problem with this is that you're trying to locate a blind threaded hole that's only like 3/4 inch (or so) deep.

    If you slip fit a transfer punch in that hole, you're gonna have four inches of it sticking out, and it's gonna be all wobbly.

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    I have lots of transfer punches, but as Bruce says, they are too long for this application. You could cut one off, but I think I have a better tool for the job. I almost forgot I had these. I have a set of dowel pin locators which are used in woodworking. They come in 1/4", 3/8", and 1/2" sizes. Here is the 3/8" version. It fits in the screw hole with only a couple thousanths of play. It sticks out a little more than I would like, but I think it will work.




    The other Bruce

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    By 'transfer screw', I was referring to one of these little thingies, which can be purchased in all the standard thread sizes:



    The wrench also serves as a handy container for the screws (and vice versa).

    Paula

    Photo courtesy http://www.finelinehair.com/home/men...nstruments.htm

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    Wow! I've got to get some of those. That's even better!

    T.O.B.

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    Quote Originally Posted by Paula View Post
    By 'transfer screw', I was referring to one of these little thingies
    Sweet!! Never seen those before.

    It's like... like a transfer punch for blind shallow threaded holes where a traditional transfer punch would be too long and all floppy like.

    That's really slick!

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    Quote Originally Posted by FTF Engineering View Post
    I recently installed a 10K leadscrew reverse lever onto my 9" Model A and thought I would share some pics I took during the process.
    -Bruce
    Is it the same part as used on the later 9" workshop lathes? When did the 9" get the plunger reverse lever?

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    Thanks for everyone's help. Here's a few photos of my attempt (and note that I modified the process somewhat to add a spring plunger to the spacer part that runs in a 1/8" track. This keeps the post from sliding out of alignment.

    20130928-shop-pictures-101.jpg20130928-shop-pictures-103.jpg20130928-shop-pictures-105.jpg20130928-shop-pictures-106.jpg20130928-shop-pictures-111.jpg

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    thamer,
    That looks great!
    This thread was a huge help to me too.
    I like that retainer pin, I ended up installing a big ass circlip on the back of mine.
    Attached Thumbnails Attached Thumbnails tumbler-installer.jpg   circlip.jpg  

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    Sure would be nice to see this thread made a sticky or maybe attached to the "What have you made for your lathe" thread. I seem to keep losing track of it and having to search it out all over again.

  17. #56
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    I added it to the 'noteworthy threads' thread

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    Quote Originally Posted by FTF Engineering View Post
    I recently installed a 10K leadscrew reverse lever onto my 9" Model A and thought I would share some pics I took during the process. [Very helpful text and photos deleted] -Bruce
    Bruce, here it is over 11 years later, and your post is still relevant and useful. Thanks very much!

    Jon

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    Excellent. Very happy to hear that.

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    hello all was wondering what happened to all the pictures on this thread? Just when I was going to attempt this mod on my south bend.

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    As I mentioned in an earlier thread, photobucket has changed its policy. It no longer allows outside links to photos unless you pay for it. Any photos on this board or any other board, cannot be accessed unless the person posting them has a paid subscription to the service. It is unfortunate, but that's the way it is.

    Stay safe and have fun.

    Joe.


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