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

Member postings for Mick B1

Here is a list of all the postings Mick B1 has made in our forums. Click on a thread name to jump to the thread.

Thread: Finally sort of know which lathe to buy, but?
19/07/2019 20:31:58

I'm an ex-Myford owner too. I've had a Warco WM250V for 4 years now, with the Myford double-swivel vertical slide I saved from its predecessor. This outfit has so far proved capable of doing everything I've wanted, and is pleasant and quiet to use. Those things that've gone wrong were always my own fault, and fixable by me.

Whether you need a vertical slide depends pretty much on how much milling and co-ordinate drilling you're gonna need to do. My vertical slide is in use at a guess 30 or 40% of the time.

Thread: Surplus subjects learnt at school.
19/07/2019 19:42:22

I found Latin a drag at the time, but I'm now grateful for it. It makes several other languages easier to understand even if you can't speak them, and it exposes the structure, roots and original meanings of very many English words too.

IMO the boundary in knowledge between that which makes life practical and that which makes it interesting is never sharp.

Thread: What Did You Do Today 2019
19/07/2019 17:44:17

Finished fitting a bolt I'd made for a pair of sliding doors I put in last month:-

img_3161.jpg

The bolt's there so that the back livng room - generally Carol's art room - can be used as a bedroom without losing access to other parts of the house when a bunch of friends or relatives come visiting.

I 'spect I could've done it more easily, but this way just occurred to me.

Thread: If it ain't broke don't fix it - or should I?
19/07/2019 08:57:24

You're not worrying about the dried-up oil stains on yer headstock.

It works well. Why fuss about unseen cosmetics - this is engineering, not fashion?

If you hadn't put it on this forum, only you, and perhaps He Who Sees All Things would know.

laugh

 

 

Edited By Mick B1 on 19/07/2019 09:25:25

Thread: A little rant about Emojis and their kin
18/07/2019 14:58:28
Posted by Michael Gilligan on 18/07/2019 14:46:41:

Update: **LINK**

https://emojitranslate.com/

is available ... but I don't know how good it is

MichaelG.

For finding meanings for emojis in common or not-so-common use, it's completely useless AFAICS.

17/07/2019 17:38:57

It's just another evolution of language, and whatever anybody may try to do, languages do what they do regardless and expressions of whatever nature mean whatever their users and readers accept that they do.

They represent a set of new characters which can be called up from a computerised selection, so they don't depend on the user's ability to draw them, and therefore don't require the substantial learning exercise of the reputed thousands of characters of some oriental languages.

Some emojis are useful, some aren't. The selection I get on this site is hugely larger than I know how to use, and come to that I've not seen many of them in other folks' postings either - if I had, I might have a better idea of what they mean... blush

Edited By Mick B1 on 17/07/2019 17:39:42

Thread: Myford Vice for Vertical Slide
16/07/2019 17:38:11
Posted by Howard Lewis on 16/07/2019 15:49:15:

...

With regard to Jason's broken vice, the fracture was probably caused by excessive clamping force against the fixed jaw, rather than how it was clamped to the machine. Tightening the moving jaw against the workpiece, and the fixed jaw, imposed a tensile load on the base, greater than the material could withstand.. Cast iron is not elastic, like steel, being strong in compression, but not in tension.

Howard

I thought that too, but what amazes me is that any tommy bar that could fit through the 'ole in the 'andle could be strong enough to deliver it!

Edited By Mick B1 on 16/07/2019 17:38:51

Thread: What started your interest?
16/07/2019 17:33:02
Posted by Stuart Bridger on 16/07/2019 13:34:47:

I always had an interest in mechanical stuff and often got into trouble as a child for taking stuff to bits (and not putting it back together) Started with plastic kits from the age of 8. At school I excelled at metalwork and loved my first experience with a lathe (Boxford). I was lucky enough to get an apprenticeship with British Aerospace. There I ended up working in an Electronics field and then drifted into IT. The reality of the IT industry is that it has no tangible legacy. No project lasts more than 3-5 years, so I had an urge to get back into cutting chips to actually make something that lasted.

Seconded! I've worked through 3 main generations of MRP software over 38 years. What was apparent was that anyone developing a new system got together a bunch of bright graduates with little or no experience and had them work up the design under tutelage from an insufficient number of experienced personnel.

The result was invariably that bodies of knowledge built up at some cost in the previous generation of software were ignored entirely, and even the defining terminology was reinvented from scratch by people with little or no idea of previous usages. IMO the overall effect has been to stultify development and maintain it in a condition similar to, say, motor car design between 1900 and 1910. Almost anything goes.

Thread: Myford Vice for Vertical Slide
16/07/2019 09:21:38
Posted by Mike Donnerstag on 15/07/2019 18:35:14:

Does anyone use a swivel vice with the Myford vertical milling slide such as this one:

I don't know if you could mount it straightforwardly, but even if you could I reckon you'd just aggravate the already apparent rigidity issues. Might work for plastics, woods and other light materials.

I use a double-swivel Myford vertical slide a lot of the time, with a vice t-bolted straight to its face, and that's springy enough to be quite limiting on milling cuts to steel. I very rarely use the swivel in the vertical plane, but quite often in the horizontal. And that will bring in a further issue of crossslide space and travel - I think it might be difficult or impossible to actually make use of the supposed versatility of such a vice, and still be able to get the tool to reach the job without colliding with some other part of the machine.

Thread: What started your interest?
16/07/2019 09:07:50

Grandpa was a centreless grinder, and as a toddler when the family was at his and Nana's house I came across what I now think was a Vernier caliper lying on a table. Nobody would let me get my hands on it, but I thought it was the finest thing in the world...

laugh

Thread: Different ways of boring a hole
15/07/2019 19:49:19
Posted by JasonB on 15/07/2019 07:34:47:

Thats all part of the fun, trying to work out ways to machine a part.

...
 
And finally for those that say you can't swing out of balance items on the lathe
 
 

Edited By JasonB on 15/07/2019 07:35:14

Well, this isn't boring but interrupted-cut turning, but it's on a Webster-Bennett vertical borer, and it's a bit asymmetric...

 

It's an axlebox bearing shell for an A160 loco.

It's not my own setup or operation - work like that's too heavy, time-consuming and valuable for a volunteer like me... 

blush

Edited By Mick B1 on 15/07/2019 19:54:08

Thread: Myford Vice for Vertical Slide
15/07/2019 16:40:43

Looking at that pic, I'd want to make up two strips of steel flat with suitable holes spaced for those mounting slots. I think washers would force the t-bolts too far out for comfort.

Ah, I see Alan Vos suggested something similar...

Edited By Mick B1 on 15/07/2019 16:42:40

14/07/2019 11:41:05
Posted by Mike Donnerstag on 14/07/2019 11:00:52:

Michael Gilligan: Mine has the engraving of the Myford name and part number too.

Jeff Dayman: The fixed jaw has no holes drilled at all, though there's nothing to stop me from drilling it for fitting false jaws, though I'm worried a little about the resulting accuracy.

If you use gauge plate as Michael suggests, that would probably solve the whole issue with no loss of accuracy - though my preference would be to avoid magnets and use socket head countersunk screws in the jaw insert, possibly with clearance holes in the fixed jaw, nutted onto a spotface on the outside. That way you can set the top edge of the gauge plate insert parallel to the floor of the vice and tighten it there - though you might have other ways to achieve the same result.

Thread: Different ways of boring a hole
14/07/2019 10:21:44

Providing it's in balance, there's a slight advantage in rotating the workpiece in that the swarf is less likely to be be forcefully flung about the place when drilling.

The only reason for doing 3) would be a long precision hole where the boring bar in the chuck alone could flex.

If it's a thin item, see NDIY's reply, or trepan it if the bore's big enough to make a tool for it. It's obviously more difficult to set up a trepan op on a faceplate than a chuck. You might use a combination of trepan and parting if you're cutting a thin ring from a bigger billet.

Thread: Any other bowmakers on here?
14/07/2019 09:32:51

My missus plays cello in a good amateur orchestra, and she just bought a fibreglass bow as a temporary replacement whilst her 'good' bow is rehaired. She says it's practically indistinguishable in use.

Thread: Myford Vice for Vertical Slide
14/07/2019 09:24:19
Posted by not done it yet on 14/07/2019 07:08:23:

I don’t know how ‘original’ that vise might be. Could have been cast in some back yard in India. I would expect subcontract machine shops would have far better vises to start with - not a myford hobby exhibit.

Likely, too, that any hard-worked commercial vise has replaceable jaws?

I suspect it is not a vise from the 70s or before. Myford quality started(?) to go downhill when they imported from asia? Cheap and cheerful, I would suggest. Cheap casting, minimum machining and no replacable wearing parts. Give me an Abwood any day (probably now sourced from the far east but built robustly).

They might have been better to start with, but some I've seen had had the handgrip hammered off the handle, and the 'replaceable' inserts - or for that matter the whole vice - looked as if they'd been chewed by a steel dog with carbide teeth. This was in the 70s - there were very many workshops being run hard on a shoestring with knackered kit even then.

14/07/2019 09:13:06
Posted by JasonB on 14/07/2019 06:58:40:

Image from Here

Gordon Bennett - never seen owt like that before. Can't see either radius or undercut in that corner.

I still think a radius raises some 'fitness for purpose' issues. I've never noticed one on any vice I've used, and if I ever buy another, I'll make sure it's like my current one and allows datuming off a square-cornered flat located against fixed jaw and vice floor.

14/07/2019 06:29:36
Posted by Michael Gilligan on 13/07/2019 22:46:49:
Posted by Mick B1 on 13/07/2019 22:12:21:
Posted by John Haine on 13/07/2019 20:54:23:

I assume (to repeat) it's there to avoid stress concentration.

I can't imagine how a plausible stress concentration would compromise accuracy more than the indeterminate datum Mike's suffering from.

.

I think John's point was that cracks start where stress is concentrated !!

MichaelG.

Anybody seen a vice cracked there, ever?! surprise

I've seen some deeply abused vices, especially in subcontract machine shops, but never a crack at the base of the fixed jaw.

13/07/2019 22:12:21
Posted by John Haine on 13/07/2019 20:54:23:

I assume (to repeat) it's there to avoid stress concentration.

I can't imagine how a plausible stress concentration would compromise accuracy more than the indeterminate datum Mike's suffering from.

13/07/2019 20:18:33

Seeing that radius at the base of your fixed jaw - from a firm like Myford - surprises me.

Here's mine:-millingvice.jpg

I now don't think it's Myford as it has no name on it. It was clearly designed to fit Myford slides, though, from the screwhole spacing. It came in a blue plastic box - long since lost in house moves - and I bought it at the Olympia show in 2003 for about 20 quid, and it's served me well since.

I thought all small milling vices were undercut like this to clear dirt and debris and ensure the location faces were definitive - to me, the radiused design looks like a bit of a rookie error.

Edited By Mick B1 on 13/07/2019 20:18:50

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

Support Our Partners
Eccentric Engineering
Meridienne Sept 2019
Ausee.com.au
Eccentric July 5 2018
TRANSWAVE Converters
ChesterUK
Warco
Sarik
Allendale Electronics
emcomachinetools
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