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Member postings for vintage engineer

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

Thread: Why does the micrometer have a second knurled segment
06/09/2019 10:09:56

When I worked in Africa the workshop temperature was average 120F and the inspection room was 70F! We used to have a conversion chart so we could make the tolerances on the drawings. Assembly could be a nightmare when fitting bronze bushes into steel!

Thread: Just a small problem
01/09/2019 13:57:48

I would go with a 6BA stepped stud. That way you are not removing anymore material.

Thread: Equity release!
31/08/2019 23:58:36

Why do offspring think they are entitled to inheritance? My parents left me sod all and I don't feel obliged to leave any money to family dependents.

Thread: Just for fun what’s this stuck in my tyre?
27/08/2019 23:55:37


Thread: M4 x 0.75mm pitch CSk machine screws
22/08/2019 23:15:21

Yes I agree. Working on early french cars has made my collection of metric taps and dies bigger than all my other taps and dies. I have 5 different size M10 taps!

Posted by Andrew Johnston on 22/08/2019 23:08:09:

A 4 x 0.75mm pitch thread was part of the old French standard for metric threads specified by the Comite de Normalisation de la Mechanique. Threads from 6mm diameter upwards conformed to the ISO system. The old French standard below 6mm has now been replaced by the ISO system.


22/08/2019 21:12:05

It's for a pair of Cozette Blowers which are French, which is why it's an odd metric size!

22/08/2019 20:40:37

I know!!!

Posted by JA on 22/08/2019 17:47:51:

This is not a standard size. M4 x 0,70 is Metric Coarse.


22/08/2019 17:33:24

Anyone know a supplier of these please?

Thread: What coating/grease for long term tool storage
20/08/2019 09:54:14

Military packings used to put the item in a box and then pour molten grease into the box.

Thread: This weeks offer at Lidl
19/08/2019 22:30:50

Have you checked the brushes? Bosch grinders have a sprung loaded pin in the brushes, when it wears down the pin pops out and lifts the brush.

Thread: Black Oxide coating
11/08/2019 23:14:40

Do you know what is in the caustic solution?

Posted by David George 1 on 20/07/2019 10:02:49:

If you plate or other coat bolts and cap screws etc you can cause embritalnent or lower the tensile strength of items but there is no change to steel strength or structure with blackodising which is done by diping in to a caustic solution at 135 deg which causes a black coating Fe 3O4 which us rust preventative no change to steel structure. That is why Unbrako blackodise their cap screws.


Edited By David George 1 on 20/07/2019 10:03:50

Thread: Is your spindle bore large enough?
10/08/2019 10:19:26

In the oil industry they have pipe lathes with spindle bores up to 18"!

Thread: Bulking problem?
09/08/2019 18:35:59

Try a piston clamp

Thread: What hand protection do you use?
01/08/2019 21:35:45

None! The skin on my hands is very thick & tough and I lack sensitivity to hot surfaces. On the odd occasion when I have visited A&E to have cuts stitched up they curse like made as they struggle to get the needle through my skin!

Thread: Searching for an Off-The-Shelf, Light-Duty, Rack & Pinion
31/07/2019 08:36:46


Thread: Is there a type of Sellotape/"sticky-backed-plastic" that forms a PERMANENT bond
30/07/2019 21:44:34

Helicopter tape?

Thread: Steam powered RC aircraft
29/07/2019 20:36:55

The Russians actually built a of nuclear powered aircraft that was to be steam powered!

Thread: Three jaw indipendent chuck
26/07/2019 22:18:55

When I did my apprenticeship we were only allowed to use 4 jaw chucks. You can set up a 4 jaw just as quick as a 3 jaw.

Thread: Surplus subjects learnt at school.
19/07/2019 20:27:11

They tried to teach me Religious Studies until I got suspended for arguing that there was no proof that Jesus existed!

Thread: Mallable Iron
17/07/2019 21:08:31

I would heat them up red hot and clamp to a large section of steel and allow to cool.

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