By continuing to use this site, you agree to our use of cookies. Find out more
Forum sponsored by:
Forum sponsored by Allendale Jan 24th

Walton broken tap extractor

New to me!

All Topics | Latest Posts

Search for:  in Thread Title in  
Henry Brown29/09/2020 19:08:57
avatar
297 forum posts
83 photos

I have been making some adaptors and managed to break a 7/16 UNC tap! I tried the usual tapping of the broken bit that was just poking out of the hole but all that did was chip bits of tap off, I was still left with about 8mm of tap in the hole.

I did a bit of a search on here but apart from trying alum or making a home brew spark eroder I drew a blank so went on to the web and discovered the Walton tap extractor. I have to admit I was a bit dubious abut this device, basically it has four fingers that push into the flutes of the tap, a collar slides down to the job and a tap wrench is fitted and the broken piece was simply screwed out, much to my relief!

I did get as much of the swarf out of the flutes as I could to get the fingers in as far as possible.

20.09.29 tap extractor 2.jpg

These things cost about £20 - £25 so won't break the bank and I thought they might be of interest to others.

Jim Nic29/09/2020 19:31:40
avatar
271 forum posts
163 photos

Looks like a useful bit of kit Henry.

What range of tap sizes will it fit?

Jim

Martin Kyte29/09/2020 20:30:20
avatar
2066 forum posts
37 photos

Spot on. Last tapped hole as usual. I'm going to regret this but I cannot remember the last time I broke a tap.

regards Martin

Henry Brown29/09/2020 21:09:45
avatar
297 forum posts
83 photos

Jim, they are pretty specific to the size of thread due to the fingers fitting into the flutes and the need for the correct number of fingers. They have been around since 1908 so not a new thing but it certainly got me out of a scrape. Mine came from Zoro as I had a 20% discount code, their website shows the range.

Martin, yes famous last words indeed! I was hand tapping this one too, good quality tap with a suitably sized wrench but it bottomed out and ping. I'm sure I have broken one before but not for many years and probably much smaller than this one was.

Jim Nic29/09/2020 21:25:33
avatar
271 forum posts
163 photos

I thought they would be thread specific so a bit pricy to buy some "just in case". I agree they would be invaluable if they can rescue a part with a broken tap stuck in the last hole.

Jim

Mike Poole29/09/2020 21:32:35
avatar
Moderator
2748 forum posts
64 photos

How the tap was broken can make a difference to how easily it comes out, if it has bottomed out hard it can be difficult to shift, if it has snapped due to a bending force applied to the tap then it can come out more easily if it’s your lucky day.

Mike

ega29/09/2020 21:38:59
1812 forum posts
153 photos

I have had success on one occasion with a Walton; as with many things, it is important to follow the instructions!

Blue Heeler29/09/2020 23:50:02
avatar
222 forum posts

What is the smallest tap size this will work with?

Oldiron30/09/2020 07:59:22
531 forum posts
22 photos

Smallest is 3mm I believe.

regards

Blue Heeler30/09/2020 08:00:41
avatar
222 forum posts
Posted by Oldiron on 30/09/2020 07:59:22:

Smallest is 3mm I believe.

regards

Thank you

mark costello 130/09/2020 18:47:30
avatar
609 forum posts
12 photos

They seem to work about as much as an Easy-out, sometimes You win.

norm norton01/10/2020 09:32:13
134 forum posts
7 photos

Thank you for showing it Henry, never seen one before.

Please can I have one in 10BA?

Steve Richardson 221/10/2020 11:36:11
10 forum posts
1 photos

does look interesting, always good to get the tap out without damaging the thread/hole

All Topics | Latest Posts

Please login to post a reply.

Magazine Locator

Want the latest issue of Model Engineer or Model Engineers' Workshop? Use our magazine locator links to find your nearest stockist!

Find Model Engineer & Model Engineers' Workshop

Latest Forum Posts
Support Our Partners
ChesterUK
emcomachinetools
EngineDIY
Eccentric July 5 2018
Warco
cowells
Eccentric Engineering
Subscription Offer

Latest "For Sale" Ads
Latest "Wanted" Ads
Get In Touch!

Do you want to contact the Model Engineer and Model Engineers' Workshop team?

You can contact us by phone, mail or email about the magazines including becoming a contributor, submitting reader's letters or making queries about articles. You can also get in touch about this website, advertising or other general issues.

Click THIS LINK for full contact details.

For subscription issues please see THIS LINK.

Digital Back Issues

Social Media online

'Like' us on Facebook
Follow us on Facebook

Follow us on Twitter
 Twitter Logo

Pin us on Pinterest