Free 173 Best Homemade Tools eBook:  
Become a founding member: 500+ tool plans, full site access, and more.

User Tag List

Results 1 to 8 of 8

Thread: Expanding arbor

  1. #1
    Supporting Member EclecticNeophyte's Avatar
    Join Date
    Apr 2013
    Location
    TriCities, WA.
    Posts
    74
    Thanks
    23
    Thanked 99 Times in 30 Posts

    EclecticNeophyte's Tools

    Expanding arbor

    Nothing fancy here... Just cold rolled mild steel round bar, drilled, threaded for 1/4 - 20, then cut with slitting saw. Holds like a dream. I was wondering how to make a tapered plug, then 'discovered' some Swagelok fittings in my junk box... The stainless ferule worked great near the head of a common 1/4 - 20 x 1 1/2" hex head bolt. The round bar is turned to fit the I.D. of the part I wanted to hold. In this case, about 9/16".


    Expanding arbor-20210227_145117_small.jpg
    Expanding arbor-20210227_145238_small.jpg
    Expanding arbor-20210227_145302_small.jpg
    Expanding arbor-20210227_145351_small.jpg
    Expanding arbor-20210227_143212_small.jpg

    The arbor was first drilled (#6), then tapped, then opened up with a F drill to facilitate the bolt shank and thin the wall a bit. It was then cut using a slitting saw in the mill, and finished using my 4 x 6 HF horizontal bandsaw...then de-burred.

    -EN

    173 Best Homemade Tools eBook

  2. The Following 6 Users Say Thank You to EclecticNeophyte For This Useful Post:

    bruce.desertrat (Mar 3, 2021), elk-a-holic (Mar 2, 2021), Jon (Mar 1, 2021), nova_robotics (Mar 2, 2021), Ralphxyz (Mar 3, 2021), rarmintrout (Mar 3, 2021)

  3. #2
    Content Editor
    Supporting Member
    DIYer's Avatar
    Join Date
    Aug 2013
    Posts
    3,086
    Thanks
    615
    Thanked 1,510 Times in 1,353 Posts


    Thanks EclecticNeophyte! We've added your Expanding Arbor to our Metalworking category,
    as well as to your builder page: EclecticNeophyte's Homemade Tools. Your receipt:




  4. #3
    Supporting Member bruce.desertrat's Avatar
    Join Date
    Nov 2017
    Posts
    534
    Thanks
    300
    Thanked 453 Times in 246 Posts

    bruce.desertrat's Tools
    That Swagelok tip is a great find!!

  5. The Following User Says Thank You to bruce.desertrat For This Useful Post:

    EclecticNeophyte (Mar 3, 2021)

  6. #4
    Supporting Member mklotz's Avatar
    Join Date
    Aug 2015
    Location
    LA, CA, USA
    Posts
    2,548
    Thanks
    252
    Thanked 4,881 Times in 1,623 Posts

    mklotz's Tools
    Another "out of the parts drawer" way to do this is to tap the arbor with a (tapered) pipe tap and then use a tapered pipe plug to expand it.
    ---
    Regards, Marv


    Home Shop Freeware
    http://www.myvirtualnetwork.com/mklotz

  7. The Following 2 Users Say Thank You to mklotz For This Useful Post:

    DIYSwede (Mar 3, 2021), EclecticNeophyte (Mar 3, 2021)

  8. #5
    Supporting Member EclecticNeophyte's Avatar
    Join Date
    Apr 2013
    Location
    TriCities, WA.
    Posts
    74
    Thanks
    23
    Thanked 99 Times in 30 Posts

    EclecticNeophyte's Tools
    Quote Originally Posted by mklotz View Post
    Another "out of the parts drawer" way to do this is to tap the arbor with a (tapered) pipe tap and then use a tapered pipe plug to expand it.
    The pipe tap/plug trick would probably allow for greater range of expansion as well.

    The 1/4" Swagelok ferule has far shorter and more aggressive taper than I desired, but a very quick solution that worked. I may eventually try to turn something with a much more gradual taper, that would expand (and support) a greater length of the arbor... Lots of ways to do this better than I did.

    -EN

  9. #6
    Supporting Member EclecticNeophyte's Avatar
    Join Date
    Apr 2013
    Location
    TriCities, WA.
    Posts
    74
    Thanks
    23
    Thanked 99 Times in 30 Posts

    EclecticNeophyte's Tools
    Quote Originally Posted by bruce.desertrat View Post
    That Swagelok tip is a great find!!
    A lucky find on my part (no pun intended).

  10. #7
    Supporting Member Ralphxyz's Avatar
    Join Date
    Dec 2016
    Posts
    1,098
    Thanks
    113
    Thanked 209 Times in 169 Posts

    Ralphxyz's Tools
    What is that in your last picture held in the lathe chuck?

    Ralph

  11. #8
    Supporting Member EclecticNeophyte's Avatar
    Join Date
    Apr 2013
    Location
    TriCities, WA.
    Posts
    74
    Thanks
    23
    Thanked 99 Times in 30 Posts

    EclecticNeophyte's Tools
    Quote Originally Posted by Ralphxyz View Post
    What is that in your last picture held in the lathe chuck?

    Ralph
    It's the reason I needed...ok, WANTED the arbor... When it's finished, and if all goes according to plan, it will be a part of an item like this...

    Expanding arbor-10v_completed.jpg



    173 Best Homemade Tools eBook
    Last edited by EclecticNeophyte; Mar 3, 2021 at 11:17 PM.

Thread Information

Users Browsing this Thread

There are currently 1 users browsing this thread. (0 members and 1 guests)

Bookmarks

Posting Permissions

  • You may not post new threads
  • You may not post replies
  • You may not post attachments
  • You may not edit your posts
  •