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Member postings for clivel

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

Thread: Storage of files
14/06/2020 21:19:27
Posted by DMB on 12/06/2020 10:50:42:Guy Lautard suggested a carousel style of compact storage with a set of 3 round MDF type boards on a common centre post rotating on a baseboard, with slots around the edges.

John

Actually Lautard's "A Strokeagenius file rack" is quite nice despite the over-the-top description. It is compact and has a reasonably large capacity, but I doubt that it is unique.

Apparently, the specified lazy susan bearing was difficult to obtain in the UK, as a result, Tony Birkinshaw published a slightly modified version in MEW #62 Nov 1999 by under the title: "A Lazy Susan For A File Rack - A modified version of Guy Lautard's Strokeagenius file rack"

Clive

Thread: 3D or 2D Drawings for SAR 25C
11/06/2020 21:13:41
Posted by Bazyle on 11/06/2020 17:27:49:

Perhaps you could put in a link to a picture of whatever a 25c is so we can understand a bit more. I found several different thins on google so not sure which one you are talking about.

The South African Railway 4-8-4 Class 25 was built in the early 1950's. Ninety were Class 25C engines built with condensing equipment for use in the semi-desert Karoo, while fifty were Class 25NC built without the condensing equipment.

What is interesting is that David Wardale's famous Red Devil, SAR Class 26, was a rebuilt class 25NC.

Drawing of the full-size engines are available for purchase here: 25C Condensing 25NC Non-Condensing - also click on the links for photos of the engines.
However, I have no knowledge as to the quality of the drawings or what is included, I am only posting the links for informational purposes.

Clive

 

 

Edited By clivel on 11/06/2020 21:18:20

Thread: Recommendations for where to start with my new Emco Unimat Basic SL
10/06/2020 02:29:43

To my mind, the Unimat PC Basic is without a doubt the best Unimat that Emco ever made.

There is absolutely no comparison between the Unimat PC Basic and the Unimat SL other than a superficial similarity due to both having round bar-beds. However, the 20mm bars of the PC Basic bed are an order of magnitude more solid than the flimsy 12mm bars of the SL bed.

With its M14 x 1 spindle, the PC Basic is compatible with most Unimat 3 and 4 accessories. The exceptions being the few items that mount directly to the bed of which the only one I can think of offhand is the fixed steady, for which Emco provided one specifically for the PC Basic.

The PC Basic does however also offer a significant number of advantages when compared to the 3 or 4. Not only does it have a slightly larger capacity, 54mm centre height in comparison to the 46mm of the 3 and 4, but it also includes a variable speed DC motor, automatic fine feed and screwcutting gears.

I have had my Unimat PC BasIc for a number of years now, if within the budget definitely get yourself the Unimat ESX25 collet chuck along with a set of ER25 collets (they are compatible), the best investment I have made for the lathe and far more useful than ER16.
I use the collet chuck for almost everything, only switching to the 4 jaw chuck for items that don't fit. As for the top slide, mine sees very little use, but you might find different

The other purchase I have never regretted is the diamond tool from Eccentric Engineering who advertise on this site. Other than for some occasional boring it is essentially a permanent fixture on my lathe. It is the smallest size they carried, I think it was the T6, unfortunately they no longer seem to list it on their site.

Of course, nothing is perfect, the round bars and steel frame make for an extremely rigid little machine, but aren't as convenient for placing items such as a mag base for an indicator. The motor is not very powerful and easily stalled, although for the beginner this is actually an advantage and many a time saved me from doing serious damage to the machine the workpiece or myself.

And the most annoying of all is the placement of the power switches on the headstock, it is far too easy to lean on the power switch with the left hand while changing or tightening a chuck. It happened to me on more than one occasion. Partially due to the motor stalling, I was fortunate to not suffer injury or damage to the machine. To prevent this reoccurring I fitted a separate switch between the supply and the speed controller which I always make sure to turn off before changing or tightening the chuck.

And even though I bought a really nice Myford ML7 a year or two back, I still enjoy using the little Unimat for the smaller stuff, and it is very convenient having a second machine setup for secondary operations.

Clive

Thread: Myford Lubrication... yet again!
29/05/2020 04:28:59
Posted by Mike Donnerstag on 28/05/2020 19:13:31:

I also read many articles that mentioned Guy Lautard’s grease gun modification, but I’ve been unable to find his article online.

The details for Guy Lautard’s grease gun are apparently to be found in A Brief Treatise on Oiling Machine Tools priced at CDN$11 (about £7).

Unfortunately, however, he is not set up to take PayPal or credit cards, only bank drafts and cheques drawn on a Canadian bank which would likely increase the cost dramatically for anyone outside of Canada.

If anyone would like to order a copy and doesn't want to deal with the bank costs, as I am in Canada I would be happy to act as an intermediary, I can accept PayPal and then send him a cheque. Needless to say this would be at cost. Please feel free to contact me by private message if interested.

Clive

 

Edited By clivel on 29/05/2020 04:30:05

Thread: Which Digital Compact Camera?
21/05/2020 17:25:15
Posted by Steviegtr on 21/05/2020 15:42:40:

It is one of those times I think yes it would be great to have a super all singing large camera & a small pocket one too, but that is not possible .

Steve.

Then give serious consideration to the Sony RX100 III, IV or V. For most users there is not an enormous difference to choose between them so base your consideration on price.

The RX100 VI and VII with their 24-200mm (equivalent) zooms are insanely expensive, only for those where money is no object or someone who absolutely needs such a large zoom range in such a minute package.

The Sony RX100 line all share the same pocketable form factor and I doubt that you will find a more capable camera for the size. They are lovely cameras, excellent performers, and as mentioned earlier in this thread, I was all set to purchase one until I came across the Panasonic GX7.

If you do take a look at one, take your time handling it in the shop, for me, I found it actually too small making it difficult to hold, but you might find different.

Clive

21/05/2020 04:52:24
Posted by Harry Wilkes on 20/05/2020 21:57:05:

I have a Panasonic Lumix DMC-*** sorry don't have model number to hand, I love mine maimly used to take pic's for the website I maintain Link

The Micro Four Thirds Compact System Cameras from Panasonic, Olympus etc are considerably smaller and lighter than full-frame SLR style cameras yet offer many of the same benefits - albeit with a smaller sensor.

I bought a second hand Panasonic Lumix DMC-GX7 a year or so back, now sadly discontinued. For me, it offers the best of all worlds. Excellent image quality, the all-important viewfinder, which as already mentioned by Old Mart is absolutely essential in bright sunlight. interchangeable lenses, a pop-up flash which although I don't use it often is useful for fill-in purposes, all in a compact package that isn't too much of a burden to schlep around when travelling or visiting the track.

The camera came with a 12-32mm zoom lens (equivalent to 24-64mm on 35mm) which serves most of my needs, I supplemented it with a cheap Olympus 40-150 zoom (80-300mm equivalent) for the occasional shot of the jays in the back yard.

jaysinthegarden.jpg

I was actually intending to buy a Sony RX100 IV when I went into the shop, while waiting to be served, browsing the trade-ins, I noticed the DMC-GX7. After comparing the two cameras, I was sold on the Panasonic, all of the features of the RX100 IV, plus the ability to accept interchangeable lenses although in a slightly larger and heavier package, which I actually preferred, the Sony RX100 camera although a marvel of modern technology is far too small to hold securely or comfortably, and of course even when new, the DMC-GX7 was considerably cheaper.

Although the DMC-GX7 has been discontinued, you may find old stock or take a look at the Lumix DMC-GX80 which is I believe the replacement.

Clive

Thread: Understanding Digital Subscriptions
12/05/2020 19:35:46
Posted by Neil Wyatt on 12/05/2020 13:41:10:

Overseas subscribers whose paper copies have been temporarily suspended due to coronavirus have been given temporary access to the archive, not Pocketmags, and have been sent instructions on how to access it.

As one of those overseas customers, I appreciate that MyTimeMedia is providing access to the archive to ensure that we are not subject to the vagaries of the postal system.

We have also been advised that we will not lose any issues, but what is not clear, is whether we will be receiving the missing issues once things return to normal, or whether the balance of our subscriptions will be made up by extending our subscriptions with newer issues.

As someone who spends their working day in front of a computer, I prefer to not spend my leisure hours in front of a screen as well, so I am not really enjoying reading the digital replacements, instead, I am hoping that I will eventually receive hard copies of the missing issues to catch up on my reading.

Clive

Thread: Unimat 3 Tailstock Die Holder
21/04/2020 19:25:32

I don't recall seeing a commercial tailstock die holder for the Unimat, but they are not too difficult to make. I made mine from an article in the June 1979 issue of Model Mechanics magazine which I downloaded from this website.

To find the magazine, scroll up to the main menu bar - a black bar with white text: HOME FEATURES WORKSHOP .. etc.

If you hover your mouse over FEATURES, a little drop-down menu will open, choose "Magazine Reprints".
The Model Mechanics magazines are on the second page of the reprints, The issue you require can be found by clicking on "Model Mechanics Complete Issues for Download Parts 5 - 10" which will present you with a list of issues - The June 1979 issue is Vol 1 Issue 5.

The actual article is called "A tapping adaptor for the Unimat 3" by Peter Lumb
Clive

Thread: QCTP dilema?
20/03/2020 18:19:01
Posted by Clive Foster on 20/03/2020 08:32:38:

...

In my view the steadily increasing use of carbide insert tooling which doesn't need easy height setting to compensate for sharpening means its time to re-consider alternatives to conventional QC posts. Especially for home builds. Slotted block posts are easily made and, if easy to change, would be an acceptable alternative to conventional QC systems.

Richard Smith described an interesting tooling system for carbide inserts in the November 2016 issue (#248 ) of MEW: "A carbide insert based quick change tooling system for the lathe" subsequent articles included further details and expanded on the system.

I have been contemplating doing something similar for myself but haven't persevered as my diamond toolholder handles most of my needs for now.

I was wondering if anyone else had given this system a try?
Clive

Thread: Railmotor 3
24/02/2020 17:14:02

I would like to purchase the Locomotives Large and Small magazine containing the Railmotor 3 article - Reeves still has a few issues so I am hoping that it is one of those, if someone could please let me have the issue number.
Alternatively, if anyone has a scan of the article that they could send me I would really appreciate it.
Thanks,
Clive

Thread: Unimat 3 collet chuck
02/01/2020 23:00:20

Unless you already have ER16 collets, instead of the ESX 16 chuck in the link above, you could consider the ESX 25 chuck for a larger holding capacity - https://www.emcomachinetools.co.uk/index.php?route=product/product&path=5_69&product_id=424

Although these chucks are labelled as ESX 16 and ESX 25 they are compatible with ER collets. I bought the ESX 25 chuck a few years ago that I use it with a set of Vertex ER25 collets and have been very pleased with it.

Clive

Thread: LaserWeb4 [for Mac] ... Advice please
10/11/2019 15:45:37

Oh, I should have read your posting more closely, you do want to build LaserWeb4 from the source.

To do so, you will first need to install some development tools, I am not too familiar with Mac programming but you will probably need to install the Mac XCode development tools. Your script also makes use of git, yarn and npm. If any of these are not part of the Xcode development suite they will need to be installed separately.

Once you have the tools installed, open up a terminal, change to the directory containing the build.osx.sh file, make sure that the file has execute permission, and then execute it by typing:
./build.osx.sh

That should download the latest source code and build it.
Clive

Edited By clivel on 10/11/2019 15:46:12

10/11/2019 15:23:44

What you have there is a "shell" script which is run from the command line in a terminal window. The "shell" is a program that processes the commands, two of the more popular shells are bash and zsh. It looks as if this particular script is used to build the application so unless you intend rebuilding it, is probably not really useful to you.

If you were a DOS user you may remember BAT files which ran a series of commands at the command line, a shell script is similar but vastly more powerful.

Comments in a shell script start with # so all text in your script that follows a # is ignored by the shell it is only there for the user's edification, all that is except for the first line:
#!/bin/sh which by convention indicate which application is used to execute the script, in this case /bin/sh (which is probably a link to the actual program),

The first thing your script does is set a few environment variables:
export SOMETHING=SOMETHING_ELSE

The content of an environment variable is retrieved by means of the $ symbol. So: for example using the "echo" command that displays text in the terminal e.g:

export XYZ=Hello
echo "The XYZ variable contains $XYZ"
would display
The XYZ variable contains Hello

That only just really touched the surface, if you are interested in learning more about shell scripts Google turned up some promising links when I searched for: introduction to shell script programming

Clive

Thread: Vertical Spindle Surface Grinder
08/11/2019 07:53:24

A two-part series by Alan Jeeves; A ‘Swing’ Surface Grinder appeared in issues 45 and 46 of MEW (Sept/Oct 1997 and Nov 1997)

Clive

Thread: Free software and human nature
17/10/2019 00:53:45

Thanks for all the responses - I was feeling frustrated, it is good to know that I am not alone.

However there are two sides to everything, and what I have since realised, is that for every ungrateful git, there have been many more people who have been very pleasant to deal with, some of whom have since become regular correspondents and if anything more like friends.

I just wish there was a way to separate the good from the bad before wasting my time on the latter group.
But, as some wise person once wrote: "it is better to acquit a thousand guilty persons than to put a single innocent one to death", probably a little overdramatic with regard to email courtesy, but the principle still holds.

Clive

12/10/2019 21:21:21

Some years ago I wrote a little cross-platform application for my own use. It could be run on either Linux or Windows as I used both platforms about equally at the time.

Thinking that others might find the application useful I set up a simple website and offered the application free (and open-source) to anyone who came across it.

Over the years the application has become fairly popular in its niche category, and as a result of numerous requests for new features and enhancements, it has grown and grown to the point that it is now a far cry from the little application that I started out with.

I also regularly receive requests for support. Fortunately not too many, maybe three or four a week on average. But I do try to answer each one promptly - the same day if possible. However, what has really surprised and disappointed me is the number of people who simply just don't bother to acknowledge my replies. After spending anywhere from 5 to 30 minutes with a personalised email and sometimes detailed explanation, I don't expect accolades or undying gratitude, a simple "thanks I got your email, that worked" would suffice, but even that seems to be too much trouble for many of the people I reply to.

It is as if my emails are disappearing into a black hole. It happens so frequently that at one time I wondered if spam filters were to blame, but after writing to the intended recipient a second time to query if they had received my first response most simply replied that yes they had.

So, you maybe wondering why I am posting this now if this has been happening for years?
Well, one of the most enduring requests has been for a Mac version of the application. But not having had access to a Mac I was unable to do anything about it until recently when I was able to borrow one. Creating the Mac version was no trivial task, mainly due to my unfamiliarity with the MacOS, but still, it came together surprisingly quickly and soon seemed ready for release - just some final testing to do. To assist with this I recruited some volunteers by posting on appropriate online boards. I received about 30 responses, of which about a third disappeared as soon as I had sent them the download link - that black hole again.

For the most part the program came through with flying colours, except for one rather crucial bug that only manifested on some machines. As I was unable to duplicate the bug on my computer it required a significant amount of time and effort to isolate the problem - it turned out to be in the 3rd party cross-platform library I was using. As it would be sometime before an updated version of the library would be available I came up with a work around. I contacted all the volunteer testers, those who had experienced the bug confirmed that it was no longer an issue. I had hoped that those who had not initially experienced the problem would also spend the 15 minutes to confirm that the new version was not causing any issues for them, but all but one had disappeared down that black hole and were never heard from again.

Human nature is strange, I guess that people just don't appreciate free.

Clive

Thread: Myford Super7 Chuck and Tool Holder points
13/08/2019 19:39:20
Posted by Del Greco on 13/08/2019 16:38:02:

2) Lathe tooling. Due to the access I have to a Warco lathe, I already purchased a bunch of 12mm tools over the year before getting my S7. The S7 has a 4-way toolpost, which only works with an 8mm tool plus a ~1.2mm shim.

Arc sell a model 000 quick change tool post suitable for the Myford, the 13mm tool gap will only just accomodate a 12mm tool. With the toolholder set to its lowest point, the base of the tool will be 4mm above the topslide. As a result, the top of your 12mm tool will be 16mm above the topslide.

Geo. H. Thomas in his book "The Model Engineer's Workshop Manual", gives the centre height over the topslide as 0.646' or 16.4mm which will allow for only 0.4mm play.
But he also mentions that this distance may vary from lathe to lathe so you may or may not only just manage to get your 12mm tools at centre height using this particular QCTP.

So if you are determined to use your 12mm tools then your best bet would be to place them directly on the top-slide, shimmed up as necessary to centre height, using the standard Myford clamp type toolpost to hold them down.

Clive

Thread: DC motor + speed controller
25/05/2019 17:50:11
Posted by Tony Pratt 1 on 25/05/2019 16:43:28:Hi,

I can't locate the article that Neil mentions above, can someone please point me in the right direction?

Thanks,

Tony

I think the article he is referring to is in MEW #240, April 2016. Building an electronic leadscrew - Chris Gabel converts his lathe using the electronics kit from Automation Artisans.

Clive

Thread: Not quite a lathe, but what is it?
15/05/2019 07:42:20
Posted by Hopper on 15/05/2019 07:12:13:
Posted by Andrew Tinsley on 14/05/2019 21:23:58:

Could well be a small glass lathe.

Andrew.

So 'tis indeed. A very small one. Used to weld two pieces of glass together etc as they both rotate at the same speed and are heated with a blowtorch. With the tiny chucks and fixed cross slide position it almost looks like it's made for one specific job. No idea what that might be. Bead making? Scientific glassware making? ???

Thanks Andrew and Hopper, that does seem to be the most likely explanation.

Posted by David Colwill on 15/05/2019 06:57:44:

I'm not sure either but I have a strange desire to buy it.

I must admit, it appeals to me too, not sure why though, but the asking price at $300 Canadian is a little too steep, especially for something I don't really have any use for

Clive

14/05/2019 21:12:33

This item for sale on a local web site is listed as a "Small metal lathe", it clearly is not.

almost_a_lathe.jpg

It looks like the headstock and tailstock are intended to be coupled together by means of the countershaft and serrated belts.

I am curious as to what it actually might be. Any thoughts ?
Thanks,
Clive

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