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Thread: Tap Follower

  1. #1
    rossbotics rossbotics's Avatar
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    Tap Follower

    Had to tap a 3/4-10 hole the other day in the mill and found out I had no way of driving that size of tap under power much less keeping it straight, I had a tap handle but no way to keep it straight while I hand tapped the block.

    This little tool is by no means new and probably everybody has one except me, I did however back in my apprentice days make one just for experience, whatever happened to it no one knows, that was many moons ago.

    It has a 3/4" diameter body for use in a collet with a spring loaded 7/16" diameter follower shaft that has a 60° hardened point, the follower shaft itself has an 1-1/4" of travel, it worked very well, I want loose this one, but probably never will use it again either.

    Here is a couple of photos
    Thanks for looking And happy machining

    Doug

    Tap Follower-1.jpg Tap Follower-2.jpg

    Tap Follower-3.jpg Tap Follower-4.jpg
    Comments are always welcome
    Doug



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  2. The Following 9 Users Say Thank You to rossbotics For This Useful Post:

    Captn Roy (08-04-2018), jackhoying (07-23-2018), Jon (07-21-2018), Paul Jones (07-23-2018), PJs (07-22-2018), Seedtick (07-23-2018), suther51 (07-23-2018), thevillageinn (08-05-2018), Toolmaker51 (07-25-2018)

  3. #2

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    It looks from the picture that the handle of the tap wrench will not clear the column of the mill, if so what is your technique to drive the tap? Thanks
    Eric

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    Frank S's Avatar
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    Eric At one time I had a very similar tool that Doug has made they work great especially if the pointed cylinder has a small enough and long enough shank diameter to allow the tap handle to be lifted off the tap for re-positioning when in cases such as it appears in the photo that the tap handle can not make a full 360 swing. Just turn it as far as it will go lift off the tap square and rotate back 90°. Having to re-position a handle 4 times per thread cut is a pain but the job still gets done
    Never try to tell me it can't be done
    When I have to paint I use http://kbs.justoldtrucks.com/

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    Paul Jones (07-23-2018)

  6. #4
    rossbotics rossbotics's Avatar
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    Quote Originally Posted by suther51 View Post
    It looks from the picture that the handle of the tap wrench will not clear the column of the mill, if so what is your technique to drive the tap? Thanks
    Eric
    You simply turn the handle as far as it will go and reposition the handle
    Comments are always welcome
    Doug



    Tool Plans for Sale by rossbotics




  7. The Following User Says Thank You to rossbotics For This Useful Post:

    Paul Jones (07-23-2018)

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    Thanks rossbotics! We've added your Tap Follower to our Tapping and Threading category,
    as well as to your builder page: rossbotics's Homemade Tools. Your receipt:




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    Kind of thought so but sort of hoped that there was some tricky solution to bend my mind with. Thanks
    Eric


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