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Thread Wires.

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Alan .20403/12/2018 21:39:58
304 forum posts
14 photos

I would like to learn how to use thread wires I’ve a set of PD wires machinery’s hand book lots of good intention but for the life of me I can’t seam to figure it out, I assume you can measure metric threads as well as imperial ? I ask as it will be mainly metric I’ll be using now I’ve change to a metric lathe, just because it’s eaisier .

Alan.

Michael Gilligan03/12/2018 22:32:34
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23121 forum posts
1360 photos

This might help, Alan : **LINK**

https://www.threadcheck.com/the-three-wire-method-of-measuring-pitch-diameter/technicalinfo/

MichaelG.

Alan .20403/12/2018 22:52:43
304 forum posts
14 photos

Thanks Michael I’ve read through it but it doesn’t help me I’m afraid, to much for me to try and take in, I could do with an example of how you measure the thread from start to finish using the wires on a M12

Alan.

Alan .20403/12/2018 23:40:19
304 forum posts
14 photos

The penny’s drops when you take another look at what your doing, when measuring a metric thread with the wire method it helps if the constant you take away from your measurement is the metric one and not the imperial one 😡😡😡😡😡😡😡😡 you know that feeling when you feel like a complete dick, hope that’s the last one for a while.

Thanks anyway Michael, Alan.

JohnF03/12/2018 23:42:38
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1243 forum posts
202 photos

Alan, a couple of links here -- **LINK**

**LINK**

The first show how to - the second the calculations to find the over wire dimension

Hope this helps John

John Reese04/12/2018 01:50:51
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1071 forum posts

Measuring threads with wires requires three hands and a good deal of manual dexterity. Dropped wires can hide for eternity in the chip pan. A much handier solution is thread triangles.

http://www.fowlerprecision.com/Products/Thread-Gages/526033030.html

I was fortunate some years ago to find thread mikes at decent prices. If you can afford them they are the best way to measure pitch diameters.

Michael Gilligan04/12/2018 08:17:10
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23121 forum posts
1360 photos
Posted by John Reese on 04/12/2018 01:50:51:

Measuring threads with wires requires three hands and a good deal of manual dexterity. Dropped wires can hide for eternity in the chip pan.

.

dont know Does the kitchen double as your metrology lab ?

devil MichaelG.

.

P.S. ... I see from another post, that you are in the US.

We may therefore be 'separated by a common language' destroying the joy of ambiguity.

Edited By Michael Gilligan on 04/12/2018 08:28:46

jimmy b04/12/2018 09:55:12
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857 forum posts
45 photos

**LINK**

These are what you need!

I've got a spread sheet that works everything out if you put in the effective thread diameter. If you are interested, message me your email and I'll send it you.

Jim

not done it yet04/12/2018 10:09:53
7517 forum posts
20 photos

I’v got some older versions - a spring loaded coil which are for discrete threads. All Imperial - they are likely not made that way for many a year, so pre-metric offerings.. Have I used them regularly? - No! Only of use if one does not have a nut to trial fit.

jimmy b04/12/2018 10:26:48
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857 forum posts
45 photos

nidy are these the ones you refer

**LINK**

Jim

not done it yet04/12/2018 11:09:30
7517 forum posts
20 photos

Mine are similar to those. Clearly still on offer and quite expensive for a comprehensive set.

Tony Pratt 104/12/2018 12:08:49
2319 forum posts
13 photos

Using thread wires isn't that difficult, practice & a dab of grease to hold the wires normally does the trick.

Tony

John Reese04/12/2018 17:41:49
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1071 forum posts

Michael G,

No, my metrology lab is not in the kitchen. SWMBO will not permit metalworking tools in the house. I have a 24' x 30' shop in another county along with a 400 sq, ft. house.

I assume the term chip pan refers to something in the kitchen in Brit-speak. Please enlighten me.

What do you call the tray under the lathe that collects most of the swarf?

I have learned quite a bit of the terminology that is used in the UK from this forum. I would like to learn more.

Michael Gilligan04/12/2018 17:59:31
avatar
23121 forum posts
1360 photos
Posted by John Reese on 04/12/2018 17:41:49:

I assume the term chip pan refers to something in the kitchen in Brit-speak. Please enlighten me.

What do you call the tray under the lathe that collects most of the swarf?

.

Chip pan : **LINK**

https://en.m.wikipedia.org/wiki/Chip_pan

... as opposed to swarf tray

It's rather like bonnet vs hood, or boot vs trunk

MichaelG.

Neil Wyatt04/12/2018 18:03:50
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19226 forum posts
749 photos
86 articles
Posted by John Reese on 04/12/2018 17:41:49:

I assume the term chip pan refers to something in the kitchen in Brit-speak. Please enlighten me.

What do you call the tray under the lathe that collects most of the swarf?.

It's a pan for cooking chips.

You are thinking of a swarf tray.

Neil

Michael Gilligan04/12/2018 18:52:34
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23121 forum posts
1360 photos

Blimey ... there's a helluvan echo in here

angel MichaelG.

RRMBK04/12/2018 19:01:27
159 forum posts
18 photos

in the US Chips are our crisps and Fries are our chips. and ive never seen anything yet in my swarf tray / chip pan that looked even remotely edible!!

Alan .20404/12/2018 19:16:54
304 forum posts
14 photos

The needing of three hands is a pain in the you know what when using thread wires, buts there’s another way if your interested, all I do is when I want to measure say an M12 thread I use an already made M12 piece of thread it holds the wires perfectly and you can sort of roll the wires with your thumb and finger if you see what I mean, it’s quit easy compaired to any other way I’ve seen, give it a go you may be surprised.

Alan.

John Reese04/12/2018 23:09:19
avatar
1071 forum posts

Great idea, Alan.

ega04/12/2018 23:36:01
2805 forum posts
219 photos

Here is a suggestion from the late Cliff Bower:

plasticene0001.jpg

An unattended chip pan was the means by which my mother twice set fire to her kitchen.

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