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

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: Another newbie question
19/12/2020 17:29:39

The screw at the end of the top part of the Tailstock (Part No. 199 on the Parts Diagram to which Jason B referred) looks to have a rather mangled slot in your most recent photograph.

If it was me, I would replace that screw with a Cap Screw so it can be tightened with an Allan Key.

Some years ago, I purchased a Selection Packs of Cap Screws, Nuts, Washers, Spring washers, Wing Nuts, et hoc genus omne - so there's a very good chance that I will have what I need when I need it.

You may like to consider doing the same.

18/12/2020 15:59:27

If you decide to make a new clamp plate, I suggest that you try to obtain some High Tensile Studding. The studding sold by one chain had very mixed reviews on their website.

If studding isn't available, you could use a High Tensile bolt or machine screw through a thicker plate plate.

If you tell us your approximate location, there may be another member nearby who could help.

Good luck

MC

18/12/2020 11:59:46

From the photographs, it looks as if the top part of the tailstock can slide transversely across the part that slides along the bed.

Does it need some adjustment there?

MC

17/12/2020 13:09:02
Posted by Howard Lewis on 17/12/2020 12:57:31:

If the lathe does not have the manual with it, try to find one.

It may be obvious, but a good place to start would be the manufacturer !

Enjoy your lathe

MC

.

17/12/2020 11:36:16

My first thought would be to check to see if any of the bolts/screws have been bent.

Have you cleaned the Morse taper?

Thread: Lidl Portable Bandsaw
14/12/2020 19:42:13

Where are those "Aluminium Vices" available, please?

14/12/2020 12:25:09

Toolstation have the Scheppach Bandsaw at £209.98; Screwfix offer the same machine at the same price (surprisingly)

Aldi charged me for delivery (even though there was lots of mentions of "Free Delivery" on their web site).

I now have to make space in shed for it!

11/12/2020 08:53:11

I checked this morning and found that the teeth were cutting towards the moveable jaw in the Vice.

This seems to be design issue to me.

MC

11/12/2020 00:49:06

Very many thanks to everybody who replied

I found a YouTube film by somebody who had converted the Vice from Cam to Screw; it involved a lot of welding (and I do NOT have the kit or ability to do that). But I've been thinking of doing the same thing without welding if necessary.

I assumed that reversing the fixed jaw meant rotating the plate through 180 degrees in a vertical plane so it projected towards the blade. If the body of the saw fouled the reversed plate a spacer should solve that.

I had NOT realised that one could fit the blade the wrong way round! I shall have to check that!

I had great difficulty in attaching the Saw to the stand. I first cleared the threaded M6 holes using a tap. Then I fitted M6 Socket set screws into these holes and that made the assembly much easier. I used a shakeproof washer under each M6 nylock nut, holding the screw in place with an Allen key.

I have invested in a pair of Cut-resistant gloves (am I allowed to mention the supplier?) to use when fitting or handling the blade.

MC

10/12/2020 16:59:20

Ladies & Gentlemen

On a previous visit to this thread, somebody mentioned reversing the jaws of the clamp - so that the jaws were nearer the cutting blade.

I've re-read the whole thread (twice) and cannot find that posting.

This is probably because I'm old and senile - but can anybody point me at that posting, please?

With seasonal greetings and my very best wishes to you and your families for a Happy, Healthy, Peaceful, Successful, Prosperous and Stress-free New Year.

ours very sincerely

MC

Thread: Whitworth v UNC
18/11/2020 12:07:37
Posted by JasonB on 18/11/2020 11:02:55:

20201118_105625[1].jpg

Very many thanks for taking the time to photograph the block and post it.

In my view, that's an odd combination.

With best wishes and thanks again.

MC

18/11/2020 10:51:11

I've now looked at the Arc catalogue and can't see which of the holes are threaded.

Can anybody tell me this please?

I'll strongly consider the Arc blocks - but the Carriage adds a substantial on cost.

MC

18/11/2020 08:57:21

That's encouraging. Thank you

I have written to the Seller and asked for clarification as to whether it's BSW or UNC on the blocks listed.

MC

18/11/2020 00:04:07

It's 3/8 inch x 16 NOT 1/2 inch

I apologise for NOT writing clearly

17/11/2020 23:53:13

There has been some interesting things posted BUT...

Back to my original question and clarification

I am thinking of buying some inexpensive 123 blocks here:

Link Removed see CofC

The description indicates that some of the holes are threaded 3/8 x 16 - but I can't see any indication if they are BSW or UNC

I have asked the local Fastener supplier if they stock machine screws in 3/8 BSW or UNC and await a reply

Buying a handful of screws by post would be uneconomic.

Very many thanks for all the hel and comments

MC

Edited By JasonB on 18/11/2020 10:07:19

17/11/2020 18:51:17

Ladies & Gentlemen

What's the difference between 3/8 x 16 BSW(Whitworth) and 3/8 x 16 UNC, please?

Are they interchangeable?

By that I mean will a 3/8 Whit thread screw into a 3/8 UNC threaded hole?

Very many thanks for taking the time to read this

MC

Thread: How can a steel thermos drinks flask fail?
17/11/2020 10:32:55
Posted by not done it yet on 17/11/2020 07:02:50:
Posted by MC Black on 16/11/2020 23:52:20:

Pre-heating flask with boiling water before filling with same kept my contents of my flasks hot for longer than a day out. Unfortunately, they were condemned by insurance company after the fire and I’ve not been able to replace with same design.

I think that a larger volume of hot liquid in large flask, eg one litre, will remain hot for longer than water in half litre flask.

MCB

Surface area of a sphere is related to the square of the radius, while the volume is related to the cube of the radius. Simply put, that means the volume increases more than the surface area as the size increases.

That means a larger volume loses energy from a relatively smaller volume, resulting in less heat loss.

Regarding the comparison of ‘hot liquid’ to water may be misleading - there is likely greater heat content in some liquids (perhaps talking soups or other food-stuffs) than in the same volume of water. All to do with the particular specific heat of the liquid and heat losses at the same rate (at any particular temperature delta). A concentrated sugar solution would, of course, weigh far more than the same mass of water for instance.

We need ‘fair comparisons’ before making sweeping statements without qualification.

I don't disagree with anything you have written

I only ever put boiling water in flasks so I can make the tea when I want to drink it. Making the tea in the flask would create problems cleaning it and the tea would be too strong (My late Mother would say that it would be "like beer" - sadly it was nothing like beer. I tried!

Incidentally, Denture Cleaner is excellent for removing tea stains from Stainless Steel teapots...... If anybody is interested.

MC

16/11/2020 23:52:20

Pre-heating flask with boiling water before filling with same kept my contents of my flasks hot for longer than a day out. Unfortunately, they were condemned by insurance company after the fire and I’ve not been able to replace with same design.

I think that a larger volume of hot liquid in large flask, eg one litre, will remain hot for longer than water in half litre flask.

MCB

Thread: Strange Word...
16/11/2020 11:01:50

I'm afraid I used the phrase "now words" in a possibly misleading sense but I was writing what I was told by former colleagues.

The context was "new words for that child" rather than "inventing new words"

The suggestion was that one should NOT correct "dose" (meaning "does" or "gose" (meaning "goes"

I'm sure that Physicists could do a better job of running the world that the Politicians !!

(Your view may differ)

MC

16/11/2020 09:32:34

Sadly, I fear that the OED reflects usage rather that setting a standard.

During my lifetime "alright" has crept into written English replacing "all right" (on the lines, I suppose, of "always".

When I was a Physics teacher (now 30 years ago), colleagues in the English Department felt that not more than one or two wrong spellings in a piece of work should be corrected, since it discouraged the boys from using "new words"!

MC

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

Sign up to our Newsletter

Sign up to our newsletter and get a free digital issue.

You can unsubscribe at anytime. View our privacy policy at www.mortons.co.uk/privacy

Latest Forum Posts
Support Our Partners
cowells
Sarik
MERIDIENNE EXHIBITIONS LTD
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

 

Donate

donate