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Member postings for Jon Gibbs

Here is a list of all the postings Jon Gibbs has made in our forums. Click on a thread name to jump to the thread.

Thread: Maching flats
23/04/2018 15:21:08

Hi Roger,

How long are the flats and how long is the brass round?

Thread: English dialect
23/04/2018 14:01:26

I came back from an international standards meeting in the US yesterday where the Italian Chairman, who likes to try to use different English idioms, misremembered and came up with...

"We should wash our dirty linen at home". Linen was also pronounced as line-en.

It was a pretty good try, infinitely better than my attempts at Italian, but, whilst all of the Brits got it, I think it left the rest of the meeting wondering what the heck he was on about smiley

23/04/2018 13:46:11
Posted by ChrisH on 23/04/2018 13:36:23:

'Snap'. - I have never quite got my head round the term 'snap', meaning (I think) elevenses or packed lunch, carried in a 'snap tin' or 'snap box'. Only ever heard the term in North Nottinghamshire/South Yorkshire area.

Snap is any packed-up meal. Also into Derbyshire. Snap is always put up, as in "Put up your snap" rather than being made.

I always thought that "disnay" was the same as "dunna" or "does na", as in "doesn't" [work]?

Edited By Jon Gibbs on 23/04/2018 13:53:34

23/04/2018 13:33:40
Posted by Brian G on 23/04/2018 13:11:37:

Perhaps nothing was out by more than a "gnat's cock"? I used to work with an elderly Black Country engineer who would only describe something as on the scunt if it was "up and down like Collins's Cocks". Funnily enough he had never heard of the famous racing cockerels.

We were a bit more genteel where I'm from (Derbyshire White Peak) because it was always within a "gnat's whisker"

...and old Humph on "I'm Sorry I haven't a Clue" always said within a "gnat's piccolo".

...and it was always known as "finny haddock" in our house too.


21/04/2018 00:44:24
Posted by Neil Wyatt on 20/04/2018 21:55:48:
Posted by Howard Lewis on 20/04/2018 21:14:48:

And when we moved from Sussex to Cambridgeshire, we had to learn to distinguish between "twittens" and "snickets"

Where I come from we call them 'lanes'.

"gennels" for me.

Thread: Turning paxolin
19/04/2018 17:50:08

I think those are the two ways - back up the piece with another piece of waste stock or cut from both sides to the middle.


Thread: Do you accept rave tool reviews as gospel?
16/04/2018 18:08:11
Posted by Ady1 on 16/04/2018 15:13:08:

It's vicious circle - give a good review - get more free stuff , Give a bad review - get nothing for free ever again ! Which one do you thing they are going to choose ?

Car magazines and car TV programs have had these problems for decades

The amount of advertising revenue etc that can be lost is significant

In the USA big pharma companies have massive influence because of their advertising budgets

So it's not a new thing, Which? magazine costs a tenner an issue because it has little or no advertising

+1 - plenty of magazines (Not MEW of course smiley ) where tool reviews are pretty much worthless IMHO.

...and it's also human nature.

None of us likes to admit that we've been "sold a pup" when tempted by an on-line bargain that proves to be too good to be true.


Thread: Wind turbines get bigger and bigger
06/04/2018 16:27:39

I think the advantage of the DC cabling onshore is that there is then just one DC/AC inverter needed to synchronize with the national grid rather than one per turbine and it's on-shore for easier maintenance.

I see no reason why DC of the same voltage as AC (RMS) would be more or less efficient to route via cable.

I would assume that each turbine will still generate AC which is then voltage converted and rectified to produce a near constant voltage DC.

04/04/2018 11:36:53
Posted by Neil Wyatt on 04/04/2018 11:13:14:
No, there is still a carbon cost to things like cement making regardless of how you source the power, because of the chemistry involved. Plus there are all the composites that go into construction etc.

You're right about cement - Dooohhh Sorry.

Thread: Trade wars and this hobby
04/04/2018 11:12:32

While we're in the EU and in any transition phase it seems unlikely to come our way because, whatever is said about the Commission, it isn't run by a "Highly intelligent" businessman who "went to all the best schools" and thinks "trade wars are easy to win". He seems determined to really "Make America Great Again" wink

After we leave the EU then it depends what the department led by the "Marvellous Mr Fox" can negotiate for us crying


Edited By Jon Gibbs on 04/04/2018 11:16:28

Thread: Wind turbines get bigger and bigger
04/04/2018 09:11:25

Repeat after me... correlation does not equate to causation wink

04/04/2018 09:06:43
Posted by Martin Dowing on 04/04/2018 08:31:40:
Posted by Vic on 03/04/2018 17:22:00:

China and India are both building Thorium reactors.


From what I read some time back they are cheaper to build, safer to operate and produce less waste.

So why they are not around?


The short answer is that the world post-WWII wanted Plutonium for nuclear weapons which comes from U238 rather than Th232/U233.

It's not trivial and there needs to be REAL money spent on research of these alternative sources before you'll see any reactors.

04/04/2018 08:59:56
Posted by Neil Wyatt on 04/04/2018 08:27:09:
Naturally if we ever get rid of carbon-based fuels, wind turbines will then effectively have a net carbon cost, but it will be much smaller than alternative modes of generation.

I'm not sure this is right Neil.

The carbon cost comes about because of the power necessary in creating the materials and in construction was generated using fossil fuels. If we have got rid of carbon-based fuels then there will, by definition, be no carbon cost in materials or manufacture.

03/04/2018 17:10:36
Posted by Clive Hartland on 03/04/2018 16:30:39:

The ongoing research into cold fusion is possibly an answer but even then basic costs are prohibitive and they seem to be going nowhere.

More research and money is needed before the world writes off Fusion power [and it's not likely to be cold IMHO]... **LINK**

...but £86M, really? I ask you. Just over 0.01% of UK Government Expenditure. At that rate it's no wonder the research seems to be going nowhere.

03/04/2018 14:52:06

This makes interesting reading... **LINK**

...some facts and figures.


Thread: What did you do Today 2018
03/04/2018 11:25:57
Posted by not done it yet on 03/04/2018 09:17:11:

How many birds need to gain access at any one time? Looks like a lot of unnecessary effort/cost, when few holes and perhaps a perch would have been more than adequate.


I like the look of it.

We seem to get quite a few birds (often woodies) fly into our windows and knock themselves out. So, if I have a criticism, it might be that the glass could confuse the birds - but perhaps up-close they can see it better from the reflection?


Thread: Wind turbines get bigger and bigger
03/04/2018 11:08:55

I may be wrong but I'd expect that the concrete foundations (or ballast offshore) for such massive turbines are likely to create one heck of a carbon deficit before they even start turning.

I'd also prefer other sources of power - I was up the LD Western fells this last weekend and the view out over beyond Barrow was just a mass of windmills and it's arguable whether it's any better than Sellafield IMHO. Undersea noise pollution and bird hazards not withstanding.

Windmills may be great technology in their own right but I think it's no more than a short term band aid.

My fear is that our political classes (e.g. Gove) are more concerned with gestures such as over ivory rather than being concerned about the real issues such as B***it delaying potential progress with the JET Project (as well as other collaborative international projects in fusion energy) where the potential payoffs could be massive.


Edited By Jon Gibbs on 03/04/2018 11:16:00

Thread: Mill chuck advice needed
29/03/2018 08:15:12
Posted by Thor on 28/03/2018 18:40:31:
Posted by Alex Mason on 28/03/2018 17:42:24:
Posted by Thor on 28/03/2018 16:30:48:

Hi Alex,

I have an ER-32 chuck from ChesterUK, on my chuck I get the same tool runout as Jason. When using very cheap collets the runout may increase to 0.02mm.


Thor, are you using the ER32s on your C8 lathe also? Did you make a custom chuck or find something compatible

Yes Alex, I am using ER 32 collets both on my milling machine and on my Compact 8, I did make the collet chuck for my C8, see here. I didn't quite get as low runout as for the purchased one (I'v got too many thumbs).


+1 for making your own collet chuck and buying a commercial bearing nut.

HH has a really good set of instructions here... **LINK**


Thread: What mic is this?
28/03/2018 16:13:23

According to this page it's a hub micrometer.....


"Dedicated to measuring the length and thickness of steps in a pipe."

...but I think it's designed for the frame to fit down a bore and allow the measurement of the width of a hub.

Edited By Jon Gibbs on 28/03/2018 16:14:08

Edited By Jon Gibbs on 28/03/2018 16:17:08

Thread: Mill chuck advice needed
27/03/2018 17:12:14

I agree with Jon above. Why not keep the Clarkson and perhaps start building up an ER set of collets and holders slow-time if you feel like it?

I got a Clarkson and a Pozilock with my 2nd hand mill but bought an ER32 collet chuck for it later. My Clarkson is just imperial, the Pozilock is metric and imperial and I now have a small set of ER32 collets (16mm, 1/2", 12mm, 10mm and 1/4" ) dedicated for tooling on the mill to accommodate both metric and imperial end mills with less than 0.5mm closure needed. Having 3 chucks means I can keep some tooling in chucks ready which can be an advantage sometimes but not always. I plan to add an 8mm ER32 collet to my mill set soon for carbide 8mm endmills - see Rod's comment above.

I also have a full set of ER32 collets reserved for the lathe and workholding with Stephenson blocks on the mill. Standardizing on ER32 makes sense for my work.

...and don't muck about with the plain ER collet nuts FWIW. Buy bearing ones. They are far easier to tighten properly for both workholding and toolholding.

Just some thoughts and HTH


Edited By Jon Gibbs on 27/03/2018 17:12:38

Edited By Jon Gibbs on 27/03/2018 17:12:54

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