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Member postings for Dr. MC Black

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

Thread: Converting fractions to decimals
11/10/2021 11:12:28

I can assure you that the screen remained blank

That may be because my computer was tired so late in the evening but the screen remained blank.

I have now downloaded the catalogue and printed the chart.

I have never heard of "American Inches" in the past.

I think it would be better if printed on A3 paper since the text is VERY small - but I don't have an A3 printer. I'm lucky when my A4 printer works !

With best wishes and thanks

MC

Thread: Being nice to a vise
10/10/2021 23:35:42

I made a simple Screw Jack by screwing a bolt into a Hexagonal Connector Nut (the sort that are used for joining two pieces of studding).

Obviously, the minimum space is the (length of nut + thickness of head of bolt) but it can be made as large as needed by using longer bolts.

I tidied it up by putting a taper on the top of the Connector and turned the top of the bolt round and knurled it (but mostly because I had made a knurling tool for my Taig Lathe and wanted to use it!).

.

Thread: Converting fractions to decimals
10/10/2021 23:28:49

Posted by Tim Stevens on 16/08/2021 11:53:16:

It is a chart of fractional inch sizes (down to 64ths) to millimetres (and four decimal places) for all dimensions from 0 to 12", and then in 32nds to 24".

Sadly the Koken web site does NOT work on my computer!

I put "Koken.co.uk" in the usual place and the Firefox screen remained blank!

I never got as far as the catalogue - pity because the Chart seemed useful (from what was written)

MC

Thread: Empty Drill Boxes
02/09/2021 23:16:13

Tracy Tools will sell me a set of Split point HSS drills in a metal box for £13.20 including Postage and V. A. T. ; the basic cost of the set is less than the price of an empty box from Drill Service (Horley).

So I shall probably go down that route.

Very many thanks for all your help

I hope that you and your families are, and will remain, safe and well.

02/09/2021 14:37:17

I have taken the risk of looking at ARC's web site and can't find empty drill boxes.

It's probably because I'm going senile but I should be most grateful if you would kindly give me a hint as to where they are listed on that web site.

Thank you

02/09/2021 14:09:56

He doesn't have a workshop; I think the drills just rattle together in a tin.

He's a semi retired minister of religion. I would NOT be surprised if he offers up a small prayer before drilling!

02/09/2021 12:37:22

Thank you for taking the time to respond from NZ.

I'm NOT looking to buy loose drills. I'm hoping to extend the life of the drills that he already owns!

I have seen cheap sets advertised - but they often come in plastic boxes and the reviews of the drills suggests that they would find it difficult to drill holes in cheese!

To answer Mr. Foster, I suspect that a set of drills from 10.1 to 13.0 in 0.1mm steps would be uneconomically expensive. How often would one need the complete range?

02/09/2021 10:33:31

Ladies & Gentlemen

Thank you for taking the time to respond.

I looked at both Ebay and Amazon before posting but neither were helpful.

I actually want a sturdy drill box to give as a present to a chum who is "mechanically inept". I have just sharpened his HSS drills for the second time and suspect that they would stay sharper if kept in a Drill Box.

I am hoping to be able to obtain an empty 1 - 6 mm or 1 - 10 mm by 0.5 mm steps.

Grotto - what do you have spare, please? Where are you located?

With best wishes and thanks again.


02/09/2021 00:27:03

Does any reader know where one can buy empty metal drill boxes (Indices?) at a sensible price, please?

I have bought these in the past but the local supplier no longer stocks them.

I'm beginning to wonder if the answer is to buy a VERY cheap set of drills in a box and then throw the drills away.

Is anybody able to help, please?

Very many thanks

Thread: Can 2 people use the same mobile with NHS Covid app?
25/05/2021 13:31:39
Posted by Peter Greene on 25/05/2021 01:32:14:
Posted by Dr. MC Black on 25/05/2021 00:38:51:

If a site asks for a cell'phone number I enter the landline telephone number.

I can't think of any reason why any company would want a cell'phone number in preference to a landline telephone number.

It's simpler for them to generate a confirmation code (for 2-factor ID) and text it to you - all done by computer - than it is to make a voice call .... even if the voice is computer generated.

I understand the need for security if, for example, one is making a purchase by Credit Card, but otherwise why collect the information.

I never give out my cell'phone number - I treat all incoming calls as suspicious.

MC

25/05/2021 00:38:51

I do NOT give anybody my cell'phone number because I can't hear it ring. So anybody ringing me needs to use my landline telephone number.

If a site asks for a cell'phone number I enter the landline telephone number.

I can't think of any reason why any company would want a cell'phone number in preference to a landline telephone number.

I have four extensions around the house to my landline and another in the shed-workshop - so I'm much more likely to be able to answer that.

I want nothing to do with Paypal (because of "unsatisfactory" experiences in the past.

But Ebay will NOT let anybody sell on their system without a Paypal account.

I hope that you and your families are, and will remain, safe and well.

MC

18/05/2021 09:53:54
Posted by Peter Greene on 18/05/2021 01:34:35:
Posted by Dr. MC Black on 17/05/2021 15:49:38:

I have no intention of replacing the telephone because newer models do NOT have a stereo jack socket for my amplified headphones.

Bluetooth headphones are not particularly expensive .... and you don't have wires.

Thank you for taking the time to respond.

I use the same headset with microphone with my iPhone, my iPad and my computer.

All I have to do to change from one to the other is to move the jack plug. I fear that changing the bluetooth between them would be fiddly and time consuming - and the computer doesn't have bluetooth (as far as I know)

When I went to the Apple shop a teenager tried to sell me "pods" but didn't spot that my ears were already fully occupied by hearing aids.

MC

18/05/2021 00:02:54

I did believe it was NOT suitable for my iPhone and that suits me.

My GP and orthopaedic surgeon advised me to minimise computer use so the NHS can contact me by Royal Mail Letterpost.

With best wishes and thanks again.
MCB

17/05/2021 17:42:53

Somebody told me that these "apps" would NOT work on my iPhone - and I took that at face value.

I do NOT want any part of NHS to communicate with me by either email or by ringing my cell'phone. I am happy to receive all communications by Royal Mail Letterpost.

It's too much to type to explain why, but if you send me your telephone number OFF LIST, I'll ring and explain.

I hope that you and your family are, and will remain, safe and well.

MC

17/05/2021 16:57:08

I have an iPhone 6s which links seamlessly with my iPad

Neither connect to my computer!

If anybody is really interested in why, send me your telephone number and I'll ring and dilate on the subject.

I have NOT had my iPhone very long (bought refurbished) and it does everything that I want at present (and lots of things for which I have no use!).

My iPad was also bought refurbished.

But if it's a decision between writing name and address on paper or buying a new telephone, I'll stick with a pen.

MC

17/05/2021 15:49:38

My telephone is too old for the NHS "app" to work.

I have no intention of replacing the telephone because newer models do NOT have a stereo jack socket for my amplified headphones.

I am happy to write my contact details on a slip of paper with a pen if I go anywhere that wants to record my presence.

MC Black

Thread: BA sizes
15/05/2021 14:46:13
Posted by br on 15/05/2021 13:57:51:

A final bit on nut spinners as per original post

Nut spinners are used in the aircraft industry on terminal blocks on wiring looms

This is the vertical stud type with insulated seperators

So on a connection strip, loom terminals placed over stud, nyloc nut fitted and tightened with a nut spinner, until the nut spinner CLICKS

This is the preset torque arrangement in the handle to prevent over tightening.and putting stress into the stud.

Hope that makes sense.

bill

That makes perfect sense.

Your spinner sounds a bit like a Torque Wrench

The Nut Spinners that I bought do NOT click in that way.

I still have an eye open for a 4BA or 1/4" Nut Spinner!

With best wishes and thanks again.

MC

15/05/2021 13:14:22

Posted by Howard Lewis on 15/05/2021 12:02:44:

Hand, Spiral Point, or Spiral Flute? is now the decision

Howard

Perhaps you should think about whether you want to include Serial Taps with Hand, Spiral Point and Spiral Flute?

I bought a set of M5 (or M6 - sorry forgot) serial taps in a "sale - reduced" and one of the set crumbled the first time that I used it! The supplier didn't want to know!

MC

15/05/2021 13:08:19
Posted by Howard Lewis on 15/05/2021 12:02:44:

Don't think that I have any BA thread gauges, (Typical! Whit, Unified and Metric but no BA but will tap a nut 1 BA and try the Taps. They certainly don't want to go into a M5 nut!

1 BA is 0.9 mm pitch while M5 Coarse is 0.8, so difference in both diameter and pitch!

An order for new Taps is imminent. Hand, Spiral Point, or Spiral Flute? is now the decision

Howard

Did you try comparing the Tap with an existing 1BA screw?

I recently bought a BA thread gauge on E.Bay for less than a fiver - I guess most of that was postage!

MC

15/05/2021 13:04:04

Proof reading one’s own text is often difficult

MichaelG.

As the former publisher for the University of London, I can safely write that proofreading one's own text is more than difficult.

One sees what one intended to write rather than what's on the paper

With best wishes and thanks again.

MC

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