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Member postings for Jo

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

Thread: Thoughts on "build threads"
30/07/2014 09:33:22
Posted by Neil Wyatt on 30/07/2014 08:55:47:

I wonder if the site Jo uses that does this has T&Cs that explicitly allow this to be done?

MEM explicitly leaves all rights of any contribution with the contributor.

It is not a commercial site and has been set up in such a way to prevent it being sold out to a commecial concern in the future. It is both owned and run by people who do model engineering as their hobby with the aim of creating a warm and friendly community who can share information, techniques, builds, etc. without fear of commercial exploitation or having to suffer with adverts etc.


30/07/2014 07:46:57

Jason, what you choose to do as a private individual is likely to be different from what David may choose to do as someone who runs another commercial website associated with publishing material associated with Model Engineering.

International copyright laws allow you to protect yours rights using something called "prior publication", but the wording used in the Ts&Cs here is clearly designed to overcome those protections. As to if MTM would actually take someone to court over it, that is another matter.

Edited By John Stevenson on 30/07/2014 10:47:48

30/07/2014 05:58:10
Posted by John Stevenson on 29/07/2014 22:14:52:

As regards the terms on this website, they are clearly mentioned, nothing hidden and perhaps if certain people don't agree to them then they need to find another site, plenty of them.

Indeed, that is what most people who write build threads do. Neil's question was to why they may not choose to post them here.

What is sad about such Ts&Cs is threads, like Jason's various engine builds, have appeared on many forums concurrently over the years and David on MEW has been good enough to put them together as a series of articles so that people can have the pleasure of reading them without all the comments and interaction. But because the latest Monitor build has been posed here the Ts&Cs mean that David will not be doing the same with that series.


29/07/2014 21:33:41
Posted by Neil Wyatt on 29/07/2014 20:13:16:

Hello Jo,

You may be interested to read the BBC's explanation of their similar arrangement for 'User Generated Content'. I don't see any material difference, and I don't think the BBC suffer from users being reluctant to submit content?

I do not see in the BBC's terms that they require that their contributors: "You agree to irrevocably and unconditionally waive on your behalf in perpetuity in respect of such Content the benefit of any provision of law known as moral rights of authors or any similar law in any country." Which is the last line of the copyright statement on putting material on this forum, see: **LINK**.

Use is one thing, irrevocably and unconditionally waiving your rights in perpetuity is something totally different.

Norman: I do not often visit this site anymore because each time I do I see another occurrence of this sort of behaviour and it puts me off for a few more weeks, the one that immediately comes to mind in is Gray's thread about his drill grinding jig sad.


29/07/2014 17:28:00
Posted by Neil Wyatt on 29/07/2014 16:50:11:

I think one answer is that we just don't have enough build threads on here, either too much reticence, or the fear of never completing!

Or could the fact they are posting on a Website hosted owned by a publishing company who claims copyright of the material posted here influence their choice of forums on which to post their threads?

I personally believe that the major influence is the culture of this forum in which many of the frequent posters members seem to have some sort of testosterone problem which causes them to pick holes in each others work and spend their time seeking to prove that they know more/are better than another member crook which is something that extremely discouraging for someone who is trying to build their first model or present their work in such away that another can learn.


Thread: Avoiding marks on work.?
26/07/2014 07:24:02

I use shims cut from Diet Coke cans under the jaws wink 2


Thread: Local Clubs, and where to find them?
03/07/2014 08:21:00

Just to let those of you who expressed an interest in model stationary engine group know: MEM has arranged to have a display of our engines at the Guildford Rally this weekend. Please come and have a chat, we all talk fluent model stationary engines in all their shapes and forms.

I will be the one playing with my Cowells, hopefully weighed down with more casting sets and tools for the workshop.wink 2


Thread: Rotary table
02/07/2014 13:05:21
Posted by Michael Gilligan on 02/07/2014 11:37:04:


Jo ... Interesting ... How are you mounting the VDH onto the table of the BCA ?


Very simply: I drilled two additional holes in line with the VDH spindle, use these to bolt onto the bed. The second will go on the Sixis tilting carrier, which means it can rotate as well as tilt.

John: When I get my bigger machine I would like another of those larger heads, I used to have a very tasty 6" Elliot universal which I could hardly lift. I still have all the dividing plates and the gears sets. But they are miles too big for anything under the size of a Beaver.


02/07/2014 10:24:25

I have no problem with my GHT Versitile Dividing Head on my BCA and think they are so nice that I am making a second one for my Sixis. I find the Cowells indexing and dividing heads a bit small for either machine, ok for use on the lathe.

I very rarely use the rotary tables (including the one built into the BCA), the dividing heads are used constantly and always left set up on the end of the beds.


Thread: Garrett cast hubs
12/06/2014 11:01:01
Posted by JasonB on 11/06/2014 16:47:32:

Go on Jo let the moths see the light of day, you know you want to reallywink 2

smile o Those moths are an endangered species, daylight is not good for them, they are naturally nocturnal and prefer the dark safe inside of my purse.

I don't like forums that charge for access which is why I rarely visit TT and will not post on there. It is not as if owning and running a forum is expensive.


Thread: how free moving or not
11/06/2014 14:25:15

The wheels should spin if you flick them without the motion in place. With the connecting rods in place they should easily go round.

Rule of thumb is that all joints should be free enough that there is space for the oil, if they are tight then "the oil won't fit".


Thread: Special Magazine Subscription Offers for Father's Day
11/06/2014 14:14:25

They were offering me digital for £7.05 less than a paper copy with the promise that if I don't renew I wouldn't be able to continue to see what I had already paid for.

Not sure why anyone would want to have a digital subscription. I wonder if the MHS could indicate how many subscribers they have for each version. My guess is very few are digital only.


11/06/2014 13:10:43

I couldn't see any offers for £20 on those re-directed pages.

I assume the same offer will be made for Mothers day (wouldn't want MHS to be seen as sexist).


Thread: Garrett cast hubs
11/06/2014 12:55:19

And if you want to see most of the photos you will have to make a "donation" surprise


Thread: what's the difference in taper, second and plug taps?
01/06/2014 10:22:08

Pins or dowels are used for repeatable accurate location on a jig or between components, not fasteners.


Thread: Soft Start For Electric Motor
15/05/2014 14:18:29
Posted by jason udall on 15/05/2014 13:28:00:
Static and phase I understand produce pseudo two phase..and as such deliver less power than expected from your nominal 3phase motor.

Static converters start by creating two phases, the running of the motor creates the third phase. A rotary converter has a motor already fitted and that has already created the third phase. Both deliver full power when running.

Jason: disgust May I suggest you stop your motor before going directly from forward to reverse, if you want the motor to last. If you use a coventry die head to cut your threads you can, if you must, go in full speed and no backing out is necessary with all its risks of swarf getting trapped and damaging the threads. sad


15/05/2014 09:53:54
Posted by John Stevenson on 15/05/2014 09:47:53:

3Kw convertor is about £780 and they only generate 2 phase, the third phase is ghosted


disgust When did they get that expensive, I was quoted £500 for another of my all singing all dancing 3HP Transwaves last autumn.

Edit:  Just checked 3HP converters: Rotary Converter £726, Hi-Torque Static £462.


Edited By Jo on 15/05/2014 10:24:28

15/05/2014 09:46:00

Then I recommend you think of the VFD as purely a glorified transformer and continue to use the gear selector switches for speed control.

You will have to think about where you are going to mount the VFD box and how you are going to turn the power on and off: The switches on the front are small and fiddly, which normally forces people to add a pendent, have you thought where is that going to go? Remember it has to be secure so that you can hit it to turn the power off in an emergency.

And before you start ripping out the original Colchester electrical wiring to use the existing switches to control the VFD, remember that that will impact the machine's long term value.

Motor type: Yes three phase has less of a start up spike (I think my 3Hp peaks at 15A) but you should still think of running a separate mains ring/spur (on their own fuse ) when it comes to these more powerful machines and the fact that it is seperate will stop your machines glitching the rest of the household's mains power.

Yes the Student needs a 3Hp motor, it is a powerful professional machine capable of much more than lesser lathes.


15/05/2014 09:02:17
Posted by Ian Phillips on 15/05/2014 08:31:56:

A static inverter is a retrograde step compared with a VFD and the end results between the two are worlds apart. (Google it)

Jo, your speed and torque requirements are limited by what the lathe manufacturer chose, with a VFD you still retain all of those, but, in every belt selected speed you have the variability and CONTROL! of the spindle. Soft start, soft stop, jogging, and a myriad of other features. In practice you would rarely change belt positions but do all your day to day turning just using the speed pot.

The lack of torque at low rpm is an imagined problem only (just use a lower belt speed speed) but I find it incredibly useful for tapping purposes and as a general safety feature,

Ian P

Ian: The Student and the Master are geared head lathes, we don't have to mess around with belts.

The lack of torque from a VFD at low speed is a fact on my Sixis mill that I have one fitted to. And I particulairly do not like the way it lets you overdrive the motor (the motor gets excessively hot which is not good!) and the trip function is a pest when you are working the machine hard.

I have three static converters they all work very well driving the seven 3 phase machines I own. I have one VFD and have been very dissapointed with it. If you have only one machine then think of the VFD as integral to the machine, then you buy another VFD and another for each additional 3 phase machine.


15/05/2014 07:41:32


A silly question: Have you run a 45Amp spur to your Colchester from the main fuse board or have you plugged directly into your 30A ring mains?

If you return to a 3 phase motor, I suggest that you don't waste your time with a VFD and buy a static converter like I have on my Master: the Student has adequate gearing to be able to run at all the speeds you need without the compromise of lack of power at the lower speeds that a VFD imposes crook.


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