SR fence posts

Outside the fence.
nberrington
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SR fence posts

Postby nberrington » Wed Nov 27, 2019 12:50 am

Many of you will remember one of the kindest modellers I had the pleasure to know, one J Douglas Smith. Sadly he is no longer with us.

One of his many articles in the model press was on his SR concrete fence posts (MRJ No 180, 2008)

I acquired a good quantity of these from him ( I believe Slaters did the castings) I am trying to get my hands on more. I wrote to slaters a while ago, and they didn’t seem able to help.

Does anyone have a quantity surplus to their needs, or know if who I can approach to do a run on castings.

The photo below is of some I got from Mr.Smith about 10 years ago.
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Rod Cameron
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Re: SR fence posts

Postby Rod Cameron » Wed Nov 27, 2019 11:01 am

I have quite a few of these but none spare.

At Wells I did speak to Alan of ModelU about them and sent him an example with a view to seeing if he could 3D print them, either off the casting or from the drawings in Southern Nouveau; I haven't heard back but I guess he is inundated with other potential products. Might be worth you dropping him a line though.
Rod

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TonyMont
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Re: SR fence posts

Postby TonyMont » Wed Nov 27, 2019 12:47 pm

Hi,
I am not sure if it will help, but I could produce white metal castings, using these as masters.
Regards,
Tony.

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Steve Carter
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Re: SR fence posts

Postby Steve Carter » Wed Nov 27, 2019 1:01 pm

The Kent AG have had some 3D printed for Eridge.

They are on KAG member Mark Leigh’s Shapeways shop https://www.shapeways.com/shops/p4-models under the title Southern Region Lineside Concrete Fencing.

Mark kindly passed on the following info -

“There are different materials that it can be printed in, the default is PA12 so you may need to change the material for the cheaper versatile plastic but I understand that the holes never came out with that material?

There is also an Updated Southern Region Lineside Concrete Fencing.
It is the same as the above but has holes in every post.
There is only one material for that model which is PA12, hopefully so the holes are printed [higher resolution material]”

I intend to purchase some once I’ve calculated what I need :thumb

Steve
Steve Carter

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Rod Cameron
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Re: SR fence posts

Postby Rod Cameron » Wed Nov 27, 2019 2:38 pm

Thanks Steve - and I've seen the Eridge posts in situ doh!

Clever bloke that Mark ...
Rod

nberrington
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Re: SR fence posts

Postby nberrington » Thu Nov 28, 2019 2:51 pm

Thanks Steve - those look very good!
How does the plastic hold up? (Some of the 3D printer plastic seems brittle after a while)

I wonder if they can print them in brass like his ground signal bases?

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Steve Carter
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Re: SR fence posts

Postby Steve Carter » Thu Nov 28, 2019 3:26 pm

Neil

PM sent

Steve
Steve Carter

Brightspark
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Re: SR fence posts

Postby Brightspark » Thu Nov 28, 2019 7:35 pm

Hi Guys,

Douglas passed the rights for the fence posts and the disc signals to me.
I am surprised that Slaters said that they knew nothing as we had some correspondence about these just after he died.

Of the fence posts I have few bits of frets, but mainly the centre posts. (Quite a lot of centre posts)
More importantly I have the original tooling.

I have been asked to do another run, but have not had chance to go into this due to work etc. I am also not sure how much demand there is.
As for material, I did consider white-metal as did Doug, however these proved to be too weak so brass is the preferred choice.

It was also suggested that I supply the wire as well. But you have to buy an awful lot of that and also in the right colour. Brown or white?
As there appears to be demand I will put a bit more action into pressing ahead with this.
If anyone wants to express an interest in quantities or colour of wire then let me know.

ps I still have stock of the disc signals

Andy

nberrington
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Re: SR fence posts

Postby nberrington » Thu Nov 28, 2019 9:05 pm

Andy - that is excellent news. I have sent you a message (or two)
The ground signals are also lovely little models.....

FCA
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Re: SR fence posts

Postby FCA » Fri Nov 29, 2019 8:30 am

Here's a pic of some of Mark's excellent fence posts in situ on my shunting plank:

Richard
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John Palmer
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Re: SR fence posts

Postby John Palmer » Sat Nov 30, 2019 12:50 pm

Before seeing this thread I had never been aware that these fencing components had been manufactured in 4mm scale - obviously I never saw the relevant MRJ article!

If cast in brass then in principle I would be interested in acquiring a quantity, if the price is right. This thread has prompted me to research the fencing for our Burnham layout, leading to the conclusion that we have frightening number of fenceposts to instal. The photograph below suggests that the boundary fencing consisted of posts with the same pitch distance as that between the harps of standard Southern harp-and-panel platform facing; i.e. four feet. Fencing at this pitch extended along the full length of the excursion platform and beyond, yet at the west end of the station there was another length of post-and-wire fencing where the pitch between posts appears to have been between 14'-16'. So there seems to have been quite a lot of variation in the interval between posts.
Burnham fencing.jpg
For wire, I would be inclined to use 0.08-0.10 mm monofilament fishing line, or omit the wire altogether.

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barhamd
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Re: SR fence posts

Postby barhamd » Sat Nov 30, 2019 5:15 pm

I produced some fencing for my ex-GER line using lasercut MDF fence posts and ezyline.
https://www.rmweb.co.uk/community/index.php?/blogs/entry/22158-stour-valley-dream-post-and-wire-fencing/

IMG_7012a.jpg


David

Mark-Leigh
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Re: SR fence posts

Postby Mark-Leigh » Sat Nov 30, 2019 8:48 pm

Hi

As previously mentioned in above posts , i have produced a 3d CAD file which can be printed in a variety of materials.

The original version had witness marks on the posts to assist in positioning the wire between the post as pictured below.

New Sprue v2 #1.jpg


New Sprue v2 #2.jpg


In a silly bid to get totally authentic i then adapted the corner and intermediate post to accept a wire by replacing the witness marks with 0.15mm holes, as shown below.

Intermediate Post.jpg


New Sprue v5.jpg


I'm not sure of my thought process as trying to thread eazyline through the holes would drive you to drink!

The sprues are made up of 2x corner posts , 2 x intermediate posts 2x end posts and 24x bay posts.
There are enough posts to make a run 552mm long ( 138 scale feet) if the nominal 6ft spacing between bay posts is used.

To reduce the cost of printing, i have made these customable by contacting me, i can then upload a file with the quantities you require. Part of the pricing of the printing company is a setup cost which is applied to each item even if it is a multiple purchase of the same item, by redesigning the sprue you only pay one setup cost.

Since the club purchased these, Shapeways have made many advances in the material they offer.
In the "plastic" range the introduction of Acurra Xtreme and Accura 200 which have very good and excellent (respectively) strength properties and good surface finish properties.

EDIT: 08/12/19 - Sorry my mistake Acurra Xtreme and Acurra 200 are not available through the Shapeways shop, they are only available to the designer, this may change with time

The model can also be printed in metals, but the draw back is cost.

As with most models that are printed, one option is to purchase "a master" of the best resolution available and then go down the casting route to offset the cost. This however is extremely time consuming and with investment casting a lot of specialist tooling is needed.

Mark
Last edited by Mark-Leigh on Sun Dec 08, 2019 5:11 am, edited 1 time in total.

Terry Bendall
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Re: SR fence posts

Postby Terry Bendall » Sun Dec 01, 2019 9:11 am

Mark-Leigh wrote:I'm not sure of my thought process as trying to thread eazyline through the holes would drive you to drink


When I have wanted fencing of a similar style,but only a short run I have used 0.3mm brass wire to represent the fence wire used. Overscale of course but it makes threading the wire a lot easier and the end product is more robust. For the useful product that Mark has produced the holes would need to be enlarged.

Terry Bendall

Brightspark
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Joined: Wed Nov 22, 2017 9:35 pm

Re: SR fence posts

Postby Brightspark » Sun Dec 01, 2019 3:52 pm

Quite an encouraging response. I shall get onto this ASAP.


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