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  1. #1
    brianhw's Avatar
    Join Date
    Dec 2015
    Thanked 78 Times in 17 Posts

    Damaged thread repair tool

    I recently made this little tool for chamfering damaged threads on drive shafts where they have been hit with a hard hammer when installing, (never by you or me of course!). It can also be used for any size or type of thread from 1/2" to 1" in diameter, or even plain bar for that matter. It works well in the tailstock of the lathe, should you ever find the need to use it there.
    I have used a single triangular carbide lathe tool tip as seen in the video and it cuts with just minimal chatter.
    Not difficult to make if you have lathe and milling machine facilities and are prepared to do a bit of old fashioned filing !

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

    benkeller3 (03-20-2017), C-Bag (03-19-2017), Carlos B (03-19-2017), JD62 (03-21-2017), lanemfg (03-21-2017), mklotz (03-19-2017), olderdan (03-19-2017), Paul Jones (03-19-2017), Seedtick (03-20-2017)

  3. #2
    Content Editor DIYer's Avatar
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    Aug 2013
    Thanked 439 Times in 399 Posts

    Thanks brianhw! We've added your Damaged Thread Chamfering Tool to our Fastening category,
    as well as to your builder page: brianhw's Homemade Tools. Your receipt:

  4. #3
    olderdan's Avatar
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    Jun 2016
    Thanked 342 Times in 118 Posts
    Brilliant idea Brian,how many times I wish I had one of those, got to make one now.
    Thanks for sharing

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

    Paul Jones (03-19-2017)

  6. #4
    mklotz mklotz's Avatar
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    Aug 2015
    LA, CA, USA
    Thanked 1,600 Times in 618 Posts
    Yes, and a miniature version of this, mounted in a Dremel, would be ideal for deburring/chamfering small screws after sawing to length.
    Regards, Marv

    Home Shop Freeware

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

    Paul Jones (03-19-2017)

  8. #5
    C-Bag's Avatar
    Join Date
    Aug 2015
    California, central coast
    Thanked 809 Times in 461 Posts
    Loved the vid, and the tool. Lots faster than a tread file.

  9. #6
    Jon is offline Jon has agreed the Seller's Terms of Service
    Administrator Jon's Avatar
    Join Date
    Jan 2012
    Colorado, USA
    Thanked 1,335 Times in 753 Posts
    Congratulations brianhw - your Damaged Thread Chamfering Tool is the Homemade Tool of the Week!

    Very clever why-didn't-I-think-of-that tool, and it's going to save a lot of thread filing (and damaged thread cursing) for everyone who builds one.

    Some nice picks from this week: a Powered Wheelbarrow by kenrizza, a conceptually-similar Combination Hand Truck/Trailer by Frank S, a versatile Workshop Stand by janochek, a Small Live Center by richard meidl, a Powered Watch Winder by mklotz, a Spring Compression Tool by Frank S, and a C-Clamp Mod by Frank S. There were also multiple nice tools by Christophe Mineau, including a Circle Dividing Method, a Compound Slide Angle Setting Tool, a Tool Height Gauge, and Carnauba Sticks.

    brianhw - you'll be receiving a $25 online gift card, in your choice of Amazon, PayPal, Giftrocket, or bitcoin. Please PM me your current email address and gift card choice and I'll get it sent over right away.

    More importantly, that's win #3 for brianhw! With this win, you become our 14th 3-Time Homemade Tool of the Week winner. You're in good company joining these other 3-Time winners: rossbotics, mr95gst, Paul Jones, Christophe Mineau, immortalx, scorch, Brendon, Frank S, mklotz, Vyacheslav.Nevolya, jjr2001, olderdan, tonyfoale (all award winners are viewable here).

    I've added the 3-Time graphic award icon to your postbit, under your avatar.

    Here are all of your wins:

  10. #7

    Join Date
    Mar 2017
    Thanked 0 Times in 0 Posts
    Brilliant idea Brian,how many times I wish I had one of those, got to make one now.

    Post your reply!
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