By continuing to use this site, you agree to our use of cookies. Find out more

Member postings for not done it yet

Here is a list of all the postings not done it yet has made in our forums. Click on a thread name to jump to the thread.

Thread: HMS Queen Elizabeth: Leak found on new aircraft carrier
20/12/2017 14:23:45

I wonder how they tested the .landing gear & sif only one actually thinks about it.eam catapults without any aircraft !

(Sigh!) Let me inform you, just a little. F35 aeroplanes are VSTOL type. They are vertical or short take off and landing. No catapaults required.smiley The other comments are rather self evident, I think, if only you gave them a little thought.

Thread: Peculiar needle file
20/12/2017 14:13:45

or belonged to a Mr. Bedford

Yeah, right! If you think that.....

Thread: Pickling Stainless Steel
20/12/2017 14:10:55

You could always ask to be disconnected if you're that worried about it.

Most of it is sent back - the supplly companies charge to dispose of 90% of the original delivery to residential customers! Further, they charge more for disposal and then supply it to other customers.smiley

Thread: Peculiar needle file
20/12/2017 13:43:58

Does it have a maker's name or logo ?

Original post:

With the aid of a x10 magnifier I can just about make out the name 'Bedford' stamped on the handle, I

So, I s'pose it was made by BedfordTools of Sheffield?

 

Edited By not done it yet on 20/12/2017 13:45:45

Thread: HMS Queen Elizabeth: Leak found on new aircraft carrier
20/12/2017 01:11:08

i.e. check it doesn' leak when in sevice !

Do you honestly think that? It is on sea trials, not in service. Not a full complement of crew, civilian testers, checkers, etc and likely no armaments and only enough of anything to prove the systems.

You seriously don't think they run the screws at full speed while in port, do you?

Of course they return to port - to remedy any faults found during the trials. That is what the trials are for - to find any faults. They will have tested all they can before doing the sea trials.

The ship was built to a specification. It will not be accepted as fully functional until commissioned properly - ie checked carefully to prove it is to the specification provided to the shipbuilder.

Finally, do you know how aircraft are tested before they first fly? They are not just rolled out of the hangar and flown off the runway!!

Thread: DRO for a ML7
19/12/2017 21:28:16

Just looked at the pic on warco. Are you comparing like with like re dro? Pic insert shows a 3 axis panel but specs state 2 axis.

Are you going to be milling with a lathe attachment? Def needs checking out, if you are!

£440 seems high for a 2 axis system similar to whatt they are fitting for £250.

What condition is your lathe - might be better than a new one in a few years time.

Only you know whether it is cost effective, but somehow I doubt it. Or it might appear cost effective, but would you be getting a sensible improvement - short term or long?

If you just want forum confirmation to justify a shiny new chistmas present, you'll not get it from meno!smiley

Thread: 1947 Jepson engine
19/12/2017 19:28:56

I need a bigger compressor!

Maybe, in the interim (for model testing) you might consider adfing an extra receiver... or two. That, or up the PRV/pressure switch to get a small increase in free air, if the motor will provide enough grunt!

For a low pressure air brush setup, a couple of coke bottles might do it? Longer to regain any pressure, mind.smiley

Thread: Yahoo group access
19/12/2017 19:05:00

Apart from registering problems, which is clearly particular to the forum, I can (no longer) access f7les on yahoo fora, it seems. I can list files and the individual jpg/pdf but that is as far as it progresses. Anyone else have this problem?

Thread: Pickling Stainless Steel
19/12/2017 15:44:26

Also says, "MAY BE FATAL"

More than dihydrogen monoxide in the wrong concentration?smiley

 

Edited By not done it yet on 19/12/2017 15:45:15

19/12/2017 10:18:12

Sounds a bit like this stuff **LINK** sold for use in a domestic environment........and clearly has a label which says 'danger' on it!

 

 

Edited By not done it yet on 19/12/2017 10:20:03

Thread: HMS Queen Elizabeth: Leak found on new aircraft carrier
19/12/2017 10:11:09

Question to ask is how much water might be taken in if the (faulty) seal actually failed completely. A dripping tap of the historical brass seat type would soon drip much faster due to the brass being cut away by the initial tiny water jet under pressure.

But, yes, it is a relatively trivial problem to get sorted, I would think. Probably need extra greasy packing, or for the gland nut to be tightened half a turn!

Thread: What's the strangest project you've ever seen in an old ME or MEW?
19/12/2017 07:29:49

more like an overgrown shotgun cartridge.

Not 'overgrown' at all. A normal gauge cartridge. Admittedly rather bigger than a .410, but they just used the size for the job. It was an 8 gauge. Some wildfowling shotguns used a 4 gauge cartridge. I suppose most out there only think of the most common shotgun size - the 12 bore.

You can work out the diameter using the standard density for lead and 4/3 Pi r^3. Without checking, a 12 gauge is about 0.718".  More like a cannon shell case than a bullet, I suppose. 

 

 

 

 

Edited By not done it yet on 19/12/2017 07:33:51

Thread: Pickling Stainless Steel
19/12/2017 07:03:15

would prefer to use something a little safer

Wouldn't we all! But do remember that even dihydrogen monoxide can be lethal in the wrong circumstances. If used properly and utilising all the ppe recommended, sulphuric acid is safe to use. I would not say perfectly safe because there is always the human element, of the operation, that may not be reliable. It is concentrated sulphuric acid one should really worry about - a great deal more than pickling concentrations.

I used hot concentrated acids and alkalis at work and it never bothered me - because we took the necessary precautions for handling such corrosive (or poisonous) compounds.

Presumably you never arc weld? Never use oxy acetylene (or oxypropane or even propane/air) to heat things really hot? Would never contemplate using anything as dangerous as a lathe or milling machine?

Do your risk assessment, take all reasonable precautions - and it will be safe enough.

Thread: What's the strangest project you've ever seen in an old ME or MEW?
18/12/2017 20:48:11

Choose a NATO standard cartridge so that in an emergency you just hoik the bullet out of one?

They would need wads and a crimper - modern propellants only burn fast and clean under pressure. Not a real problem, I suppose - just use a far bigger case than required?

One problem with starting those Field Marshall engines was if that smouldering insert (of the size he was using) got trapped under the decompression valve. Didn't happen often, but was a bit of a b****r when it did, apparently. The starting handle supplied was long enough for two people to swing it. It is hard work on your own!

18/12/2017 19:27:19

How to start a tractor with a shotgun cartridge ?

Not particularly a project for a Field Marshall. It was an factory alternative to cranking when on your own (if very lightly - or weakly - built) or in the depths of winter when manual cranking was much more difficult. Making you own reloads might have been a project!

Thread: Carbide tip holders
18/12/2017 10:57:45

Enquire at Arceurotrade? I am positively certain that Ketan, for sure, can fix you up with something appropriate for your needs.

Thread: Harrison Miling Machine Feed Nut
16/12/2017 19:40:58

Perhaps the exasperated reply was directed at the pi55 takers, mainly? There is a difference between being unable to help (within the current available information) and the replies from certain parties to a new forum member?

Just thought for food.....

Edited By not done it yet on 16/12/2017 19:41:49

Thread: Welding Mazak
16/12/2017 18:39:55

I don't believe you will weld mazak in the way welding works - ie fusing the metal by melting at the joints, often using a filler to build up the joint. Filling with a braze type of filler is possible by careful selection and careful temperature control, but brazing is not welding - just higher temperature than most soldering.

Mazak is just what it is-a cheap diecasting material, often susceptible to expansion if stored in damp conditions.

Thread: Newcomer to inverters, please advise.
14/12/2017 18:18:53

It's coming from a 3 phase workshop.

240V three phase or 415V three phase? Start there.

Thread: Cheap Multi Functional Tester
14/12/2017 15:53:59

So contact work only on a car etc

There are lots of cheap multimeters suitable for use on cars - most of which I would likely avoid, mind.

Might be useful elsewhere, I suppose...

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
Allendale Electronics
Warco
Eccentric July 5 2018
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