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 Post subject: slug wrenches/hammer wrenches/1 3/4" NPT tap
PostPosted: Fri Feb 16, 2018 6:13 pm 

Joined: Sun Sep 05, 2004 9:48 am
Posts: 534
Location: Byers, Colorado
If anybody knows of a source for some good old fashioned "hammer wrenches" or "slug wrenches", or if anybody has some extras they can sell me, PLEASE don't keep it secret any longer !!!

I'm talking about the drop forged, 12 point, box end ones with a straight shank about an inch square or bigger, sizes between 3/4" and 2". (Got a nice sledge already, and some gnarly cheaters)...

Also, the washout plugs on my engine fit a 3 degree tapered thread, with 11 1/2 TPI --- pipe thread, but it's IN BETWEEN 1 1/2" and 2" !!! The oldest plumbing and heating wholesaler in town has nobody who's ever heard of 1 3/4" NPT before, and nobody I know has, either. I suspect that other owners of Porter steam engines made around WW I may have a solution for this, I sure don't know any way to chase those ancient rotten threads without a 1 3/4" pipe tap.

Thanks in advance to anybody who can help out.

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 Post subject: Re: slug wrenches/hammer wrenches/1 3/4" NPT tap
PostPosted: Fri Feb 16, 2018 6:46 pm 

Joined: Thu Apr 12, 2007 8:09 pm
Posts: 352
They may not be old, but the slug wrenches from McMaster-Carr are pretty nice..


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 Post subject: Re: slug wrenches/hammer wrenches/1 3/4" NPT tap
PostPosted: Fri Feb 16, 2018 7:05 pm 

Joined: Fri Jul 23, 2010 12:41 pm
Posts: 448
Location: Minneapolis, MN
Regarding your 1-3/4" NPT items, give the Gramlings a call. They have several Porters and I'll bet they have your answer!


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 Post subject: Re: slug wrenches/hammer wrenches/1 3/4" NPT tap
PostPosted: Fri Feb 16, 2018 7:43 pm 

Joined: Sun Aug 22, 2004 7:19 am
Posts: 5488
Location: southeastern USA
Thread files.

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Corollary: "He who does is doomed to watch those who don't repeat it anyway."


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 Post subject: Re: slug wrenches/hammer wrenches/1 3/4" NPT tap
PostPosted: Fri Feb 16, 2018 8:03 pm 

Joined: Sat Aug 28, 2004 11:22 am
Posts: 87
Location: Northeast Pa.
eBay has used slug wrenches for great prices versus buying brand new, all sizes and some sets.


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 Post subject: Re: slug wrenches/hammer wrenches/1 3/4" NPT tap
PostPosted: Fri Feb 16, 2018 8:06 pm 

Joined: Mon Aug 23, 2004 9:37 pm
Posts: 263
Location: Niles Canyon Railway, near Sunol, CA
Are you 100% sure about the 11-1/2 tpi? Washout plugs in the USA are normally 12 tpi. See http://www.astoriarailroad.org/news/2.html and http://www.nationalboard.org/index.aspx?pageID=164&ID=218.

- Doug Debs


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 Post subject: Re: slug wrenches/hammer wrenches/1 3/4" NPT tap
PostPosted: Fri Feb 16, 2018 9:24 pm 

Joined: Thu Sep 22, 2011 4:29 pm
Posts: 1326
Location: Youngstown, OH
I have a boiler washout plug tap that I had made up for the J&L 58. It would probably work for your loco.

I also have a big box of slugging wrenches, many of which I'll never use.

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"The shortest and narrowest Railroad in Ohio"


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 Post subject: Re: slug wrenches/hammer wrenches/1 3/4" NPT tap
PostPosted: Fri Feb 16, 2018 9:33 pm 

Joined: Fri Mar 26, 2010 11:43 am
Posts: 553
I can't see why anyone with a CNC plasma couldn't burn you one out of plate steel. Then you could just have the correct ones for your situation. You should only have to go crazy on them once to bust them loose from the rust and time, and once you clean and anti seize the threads, never have much problem again.

Quality tools in this size range are crazy expensive


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 Post subject: Re: slug wrenches/hammer wrenches/1 3/4" NPT tap
PostPosted: Fri Feb 16, 2018 11:44 pm 

Joined: Sun Aug 22, 2004 7:19 am
Posts: 5488
Location: southeastern USA
Washout plugs are usually steam bronze in small industrial critters.

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Santayana: "He who does not remember the past is condemned to repeat it."
Corollary: "He who does is doomed to watch those who don't repeat it anyway."


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 Post subject: Re: slug wrenches/hammer wrenches/1 3/4" NPT tap
PostPosted: Sat Feb 17, 2018 2:09 pm 

Joined: Sun Sep 05, 2004 9:48 am
Posts: 534
Location: Byers, Colorado
Gentlemen, Thank you for these suggestions, I've got a bit to go on now.

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Sammy KIng


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