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

Member postings for Nick Clarke 3

Here is a list of all the postings Nick Clarke 3 has made in our forums. Click on a thread name to jump to the thread.

Thread: How to hold work for drilling on an ML7 using tailstock pad
24/02/2021 12:14:18

While I personally don't own a drill pad and if I did would use clamps as suggested in this thread, a quick internet image search does in fact show several instances of work being held against the pad by hand.

Thread: ML7 Hand Crank / Wheel?
24/02/2021 10:17:56
Posted by Oldiron on 24/02/2021 09:57:57:

Dr_GMJN The steering wheel looks great now all you need are some gofaster stripes. smiley

regards

Furry Dice?

Thread: Skynet is Coming
23/02/2021 11:17:03

The most interesting part about this is the data retention time, presumably MTBF, of 10 years - so the design life is only 10 years?

Posted by Anthony Knights on 23/02/2021 11:06:16:

An example of technology for the sake of it?. Yesterday I was given a defunct dehumidifier, which appeared to work, but the compressor wouldn't run. Interesting starting arrangement with the start winding in series with a positive temperature coefficient resistor. Memories of the de-gaussing coil on a shadowmask crt. There was also a fusible link in the common supply, but both appeared OK.

The fault was traced to a small PCB, whose function was to interrupt the compressor supply, when a sensor told it the condenser matrix had iced up. Found the relay and its driver transistor which in turn was controlled by a 20 pin IC. Looked up the type number and came up with the following info (I have deleted the chip type number)

chip_spec.jpg

I could probably replace that lot with a couple of transistors and a few resistors. Is this just a lazy designer or was he told " We've bought 1/2 a million too many. Can you get rid of them for us?"

23/02/2021 11:10:34

Having had to replace the dishwasher, freezer and washing machine during the past year apart from the very cheapest machines I would not choose for their quality, you seem to have to pay more for a more expensive appliance to NOT get this connectivity.

My Amazon Alexa developed a strange fault recently - If you asked it to play a radio station or a music track it would tell you it was going to do it and then there was nothing. Searching the Internet suggested it was due to overloaded wifi. So I made certain everything on wifi was switched off restarted the Alexa ad then turned wifi back on as necessary. All is now well.

Are these two things connected - probably!

Thread: New mill vice which one
22/02/2021 12:39:39

Thanks - but worryingly it is only a couple of days until payday, so I must keep temptation in check!

22/02/2021 12:06:38
Posted by Oily Rag on 22/02/2021 11:17:03:

I'm a firm believer that you can never have enough vices! My collection is of 4" Abwood, 4" Edgwick, 100mm Aciera with swivel base (an extremely low level vice for a swivelling action) and a 4" Palmgreen as well as a 3" J&S multi swivel vice. The Abwood and Edgwick are almost identical, the Palmgreen has a wide opening (about 5 1/2" IIRC).

If you feel constrained by the 4" Abwood (a fine vice in my opinion) have you considered Mite-Bites as a method of clamping oversized work directly to the mill table? I use mine about 30% of the time.

Martin

Do you mean Mitee-Bites? and if so which type? They look interesting but I have just googled mite-bites and the images of mite bites were quite disturbing!

A true story!!

Thread: Oiler from lamp Bulb
21/02/2021 11:26:40

Would a glass winemakers fermentation lock offer any possibilities, albeit more expensive ones?

5001.jpg

Thread: ml10 or some other?
19/02/2021 16:07:01

There is a similar machine in a dealer's ad on the back page of the latest ME magazine - £950+ VAT so you are on the money if you are buying from a dealer, but possibly a bit dear for a private sale, depending upon what accessories you are getting.

Thread: You think you have trouble starting your car on a cold morning?
16/02/2021 18:47:06

One of the more senior members of our club was a fireman on the GWR and a driver on GWR and BR. He says that the multiple units would go flat overnight on shed so they were just left running instead!

Edited By Nick Clarke 3 on 16/02/2021 18:47:32

Thread: Plans for updating the archaic forum?
16/02/2021 18:43:59

Purely out of interest if someone wished to compare the RCM&E site in Jason's link above with the MECH site at **LINK**

There are a lot of layout similarities once you are in a forum, but the colours could not be more different.

IMHO neither is incorrect, but I do need to set this monitor slightly differently to read each optimally.

16/02/2021 18:34:34
Posted by Michael Gilligan on 16/02/2021 17:54:55:
.

[for what it’s worth: I have BSc Ergonomics with Human Biology, and a daughter whose partner is visually impaired]

The only reason I added my qualification and current job role was to give some context to what might appear to be unsubstantiated opinions - it is not really what we are about normally however as a matter of interest I also have my cycling proficiency certificate somewhere - must put that on the office wall cheeky

As someone who has had cataracts treated I suspect you a very aware of the affect a loss of contrast can have on vision.

It is interesting that someone with low contrast sensitivity can perform well on a visual acuity test, such as the well known eye test chart (Snellen) yet actually still not be able to see well!

Take care,

Nick

Thread: Caveat emptor
16/02/2021 11:41:32

According to an online thesaurus synonyms of procurement include obtaining and acquiring.

Could mean lost in the post, stolen while in transit, or most likely from my experience - a signed for parcel left on the step or just shoved through the door and not actually signed for which might be a problem in multi occupancy premises.

Thread: Fitting circular windows on Large Boilered Tich ??? Best Options ???
16/02/2021 11:34:03
  • Cut the window spaces in the cab front - I would clamp to the drill table and use a tank cutter very slowly.
  • Remove the centre drill from the tank cutter and use it to cut two disks of plastic (you may need to change the setting depending upon the shape of the cutter).
  • Chuck a large piece of metal in the lathe and hollow out the end about half an inch or so to leave a thick walled tube large enough in diameter to allow for a ring of 8 or 10 or 12ba bolts to hold it to the cab front outside the round window, but with a bore that is a bit smaller to hold the plastic in place.
  • Drill holes for bolts in the frame - I would use a tool post drill, but in the past I have made a guide that I have held in the tool post and used a hand held drill.
  • Part off two slices and you have your frames. Drill holes in the cab front and bolt frames in place with plastic in between.
  • I would probably face out the metal enough for 2 and a bit frames at a time before drilling deeper and facing/boring deeper for the second pair taking the size from the 'bit' still there after parting the first set off.
Thread: 2-Part Covid Vaccinations
16/02/2021 11:18:30
Posted by blowlamp on 16/02/2021 11:16:53:
Posted by Rockingdodge on 16/02/2021 10:51:10:

My wife and I were contacted by our respective surgeries by phone for our jabs and had them last Friday and the Friday before, we're 69 & 70. Missus had quite bad reactions, myself not so bad, to the Tizer vaccine.

Roger

That's got to be the best typo/joke in the history of the internet.

Can't stop Lol-ing yes smiley

Did it affect your appetite as in 'Tizer the ..... '

Thread: Plans for updating the archaic forum?
16/02/2021 11:12:26

MichaelG's comment that this site is easier on the eye and John's about being easy to read quoted by Emmgee are not quite the same thing. Human vision depends upon contrast and so it is easier to distinguish items where there is high contrast - on a computer screen black on white or black on yellow are effective. However neither of these are particularly restful on the eyes as a high luminance (bright) colour scheme can be tiring to use.

The answer is to maintain the contrast while lowering the brightness to an acceptable level. Unfortunately this is sometimes difficult to do as many LCD screens and laptops in particular control the brightness and contrast by adjusting the backlight rather than the image displayed, even though there may be controls labelled brightness and contrast.

The current colour scheme attempts to address the issue of tiredness by reducing the brilliance of the background by changing its colour. This seems an effective and easy way forward until declining contrast sensitivity of the viewer becomes an issue due to age or visual conditions.

If you find the brightness of a site with black print on a white background difficult reduce the brightness rather than changing the background colour to grey which simultaneously reduces the contrast. On modern push button LCD monitors this can be a confusing wander through a number of menus but may need to be done as all of the LCD monitors I have come across seem to be set at 50% brilliance and 50% contrast out of the box and this is rarely the optimum once contrast sensitivity begins to decline after the age of 20 or so depending upon eye health.

Vision and text is a complicated compound of different, sometimes contradicting issues and usually one aims only for the best compromise. Two examples - a 'thin' or 'lightweight' font like the one this site uses is harder to see, but the counters or 'holes' in letters like O B and D are easier to distinguish and c & e are easier to tell apart. So Bold is more difficult, but then so is the lightweight normal! Also making print larger may make it easier to see but less is taken in at a single glance so reading, and making sense of what has been read can become slower.

The most important single piece of advice must be to take breaks from the screen. While outside the workplace the Display Screen Regulations are not policed, it is important to remember that they still offer excellent advice if you are using computers for extended times in the home.

Nick

Lead Teacher of ICT to Blind and Visually Impaired Students

Qualified Teacher of the Visually impaired

Thread: Steam engines with electronically controlled valves
15/02/2021 14:37:48

engine.jpg

15/02/2021 14:34:27

Is the one?

2008 vol 200 Issues 4319 p197, 4323 p440, 4327 p689

Les Kerr (Australia) Self-starting single-cylinder double-acting steam engine

Thread: Martin Evans, Royal Scot in gauge 0 - Walkerite sheet?
15/02/2021 11:11:24
Posted by J Hancock on 15/02/2021 10:47:26:

There are 'a few' , who I would tie to a ball and chain and only release them when they had constructed what they had drawn !

While normally I would agree wholeheartedly with you, in this case the loco was designed by Martin Evans and built by Severn Lamb for a French customer in 1965 although the design was not published in ME until 4 years later.

15/02/2021 10:20:00
Posted by Chris Kaminski on 15/02/2021 10:15:21:

@ Nick

Cynic in me tends to agree with your views about Martin Evans's mistakes devil

but I must give him credit were it is due - elsewhere in this series he acknowledges a mistake in the drawings of tranverse stays in the boiler "...Slight slip by draughtsman!..." wink

But not by him!

Cynical, Moi? devil

15/02/2021 09:55:37

This is the other half of the OP's drawing:-

scot.jpg

As the only dimension shown is the thickness of the gasket material, one must assume that this is necessary for motion clearances.

Reasons for including it might be a. the original drawing of the cylinders was incorrect or b. that the cylinder castings, originally meant for a different design, would not clean up to the size required here.

Having read many of Martin Evans's articles I conclude he would appear not to find it easy to acknowledge a mistake and would either ignore it or suggest an 'improvement' had been pointed out to him - and at least two other well known authors would seem to not offer any corrections at all!

I would think that commercial gasket material would be best here being less compressible than my goto oiled braille paper.

Edited By Nick Clarke 3 on 15/02/2021 09:56:05

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
Warco
rapid Direct
JD Metals
walker midge
cowells
Eccentric July 5 2018
emcomachinetools
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