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Moulding point motors - On Members Workbenches. - More Practical Help - Your Model Railway Club
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 Posted: Sun Jan 1st, 2012 11:26 pm
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Sol
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In my main station Tawnton, I use quite a few Peco side mounted motors



The other end of the main station uses manual operation via slide switches, so I intend to make some dummy point motors using an old unit. Now ready in a moulding box



& shortly in the next few days, I will have such a master  mould.

Photos will be supplied in the fullness of time.



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 Posted: Mon Jan 2nd, 2012 02:36 am
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Iansa
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At the risk of exposing my usual numbyness, what is the point (pun intended) of moulding dummy point motors?

 Ian



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 Posted: Mon Jan 2nd, 2012 04:36 am
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Sol
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Iansa wrote:  numbyness,     Ian


Now that Sir, is a brand new created word - I guess it should be dumbyness:lol:

But to attempt to set your mind as ease, they will be built/cast & then placed to give the impression that all the main line points have these large motors. Part of the "scenic" effect I hopeexclam:

Does MFR ring a bellquest: :mutley



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 Posted: Mon Jan 2nd, 2012 08:01 am
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gordons19
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Very neat Sol, but at the risk of being a party pooper and I'm not suggesting you don't do it, where would this process stand in the copyright legislation?

With current technology, is the scanning of an object which is then produced by 3D printing legal or illegal?  Basically it's the same thing as you are showing here.

Just curious....

Apologies for wandering off topic.

 

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 Posted: Mon Jan 2nd, 2012 09:51 am
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Sol
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Gordon, it has been discussed quite heavily here in Aust & in general ,copyright is for art & the printed word, etc but not objects which maybe covered by patents.
Same as car parts- genuine & non-genuine.

Certainly doing an exact copy maybe close to the bone but these will not be of course, being a solid object & thus bear no real resemblance to the original unit in the manner of being used.
If the casings were available on the retail market, I would have bought them.
Copying of some parts of publications is allowed for personnal use but it is a minefield.



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 Posted: Mon Jan 2nd, 2012 11:02 am
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gordons19
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Thanks Sol. Good luck with it. I'll look forward to seeing the results.

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 Posted: Mon Jan 2nd, 2012 11:53 am
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Petermac
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I'm pretty sure there's no copyright issue here.

The original Peco type mouldings are copies of the real thing (presumably) - in fact, isn't all modelling copying the real thing ?

An interesting project Sol - will the fish bowl stand the heat generated without distorting or are you cold casting ? :roll:



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 Posted: Mon Jan 2nd, 2012 12:25 pm
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Sol
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Peter, we will find out.
This is the product
http://www.amcsupplies.com.au/index.php?main_page=product_info&cPath=12_396&products_id=1757



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 Posted: Mon Jan 2nd, 2012 02:45 pm
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Petermac
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Hmmm.........  Curing at 77C, it is probably not going to cause any problems Sol.  As you say, we'll see, certainly it doesn't seem too long to wait at 1 - 3 hours setting time ..........:roll::roll:



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 Posted: Sat Jan 28th, 2012 10:36 am
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Sol
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Here is the mould made from that goo I mentioned.




because the actual point motor was not absolutely flat on the plastic box base, a slight bit of moulding  material wicked underneath & so I had to trim it off & boy, very hard to get a clean cut.

Hopefully by the the time I make a plaster casting, bit of fine smoothing, painting & locating in situ amongst the ballast, etc , it will look the part.



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 Posted: Sat Jan 28th, 2012 12:42 pm
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Wayne Williams
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That looks fine to me Sol, it should be no problem once it's all bedded in.

Wayne

PS: This has given me an idea too, so thanks!



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 Posted: Sun Jan 29th, 2012 04:58 am
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Sol
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First one - I pre coloured the plaster


it even has the two part moulding line still visible.

now painted a dark brown




and then aluminium paint over part - the same concept that Gwiwer used.


close up shows the thicker paint - next time will be better-

the little side lugs are fragile- polyurethane would be stronger.



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 Posted: Sun Jan 29th, 2012 09:21 am
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ddolfelin
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Good exercise, Ron.

It looks a simple enough shape for which to mass produce styrene parts, too.



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 Posted: Sun Feb 5th, 2012 05:47 am
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Sol
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8 built & painted - to be installed amongst ballast & weathered.





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 Posted: Sun Feb 5th, 2012 05:52 am
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MaxSouthOz
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The photo doesn't do them justice, Sol.  They look better than that in real life.  :thumbs



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 Posted: Tue Feb 7th, 2012 05:09 pm
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Petermac
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They look good Sol.  Can you use polyurethane in the same mould ?



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 Posted: Wed Feb 8th, 2012 05:27 am
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Sol
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Sory for the late response Peter, off line for 24 hours as I got a flash new 'puter that runs at the speed of light.

Yes, one can use polyurethane in the same mould.



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