How do we Build This?

oldravendale

Western Thunderer
This thread comes about as a result of a club discussion on how best to construct this 7mm Churchward Models signal box steps kit. Kit number is CM18 dated 1995, so far from a new production. I wonders whether any WTers have built this successfully.

The issue is that there are no instructions (this is a new kit, ie not second hand, so I assume there are no published instructions). Neither are there any tabs or slots to aid construction so some form of jig would seem to be in order, although locating the steps at accurate spacing and an unwavering angle seems to be difficult in the extreme, never mind the proper location of other parts.

(There is a secondary issue in that the single thickness etch is hardly representative of the thickness of timber hand rails or flooring, but at this stage that is an issue we'll sorry about later. I can think of several ways of thickening up the appropriate parts).

img105.jpg

This is the etch in it's original package - except I note that I put it back in the bag wrong way up after examination!

img108.jpg img109.jpg
These two images are the front and reverse of the etch. As noted above there are no slots and tabs.

I showed this to 'er indoors and she suggested that the steps themselves may be some form of metal origami such that extracting the assembly from the etch, bending up the sides and twisting the steps a la venetian blinds may work. Now that's not immediately obvious to me, but it certainly looks as though the side pieces of the step assembly may well repeat the angles of the sides/rails.

Having got that right the remaining parts may just fall in to place, if we can work out what they are and where they go.

As a bear of little brain I'm not altogether surprised that I couldn't work my way through the kit, but a further half dozen minds were applied to this last Thursday, all unsuccessfully. Perhaps Mrs D's lateral thinking gives us the start we need.

Brian
 

Steph Dale

Western Thunderer
Hopefully someone can describe what needs doing. I can see it, and it would take about 15 seconds if the parts are accurately drawn. But providing suitably unambiguous written description...?

Steph
 

Yorkshire Dave

Western Thunderer
Hit the infinite improbability drive button and it might come into existence along with a sperm whale and a bowl of petunias :).

Mrs D is correct - the steps are made by folding.

The description from the Phoenix/Precision website (Churchward Kit owners/distributors) product description says this 'Etched Brass Staircase. Simple fold up operation. Suitable for Signal Boxes etc.'

However, it does not detract from the fact there should be some instructions with the kit no matter how scant.
 

mickoo

Western Thunderer
Err?

You just bend the sides of the steps up so that they are 90° to the treads then you bend the treads to give the step effect.

It's a simple fold up part but looking at the shape of the sides of the steps then I suspect one side folds up and the other folds down.

Once the sides are folded up/down then they just solder to the sides of the hand rails, lining up the two parts visually and requiring no tabs.

MD
 

Steph Dale

Western Thunderer
Mick,
Yep, that's it; one side bends up, one down (form both at the same time) and no twisting of step treads.
Those instructions would have benefited from a photo or two.
Steph
 

oldravendale

Western Thunderer
Thanks all.

It would make sense that one side bends up and one down as the half etch marks are on both sides. I still don;t see how this works without bending the steps in tio place, though, although when I start bending metal it'll all probably become clear.

I'll have a look at those on line instructions too, Dave. I'd forgotten that Phoenix have the Churchward brand now.

Brian

PS - now I've re-read your comments it appears that there are actually no instructions! However, it's helpful, to a degree, to know that this is a simple fold up construction!!!
 

mickoo

Western Thunderer
Brian,

img108.jpg

If you fold one side at a time along the red axis then the steps stay flat and will need folding 90° individually afterward, but if you fold 'both' sides at the same time along the blue axis then the treads will naturally offset from each other and form the required steps. You can fold along the red line because the etched bends are not full width but small nibbles that'll easily allow a 45° fold. If the etched bends were full width along the blue lines then it'd have to be bent both sides at the same time as Steph describes.

Instructions? they are in full in the first post....You just bend the sides of the steps up so that they are 90° to the treads then you bend the treads to give the step effect ;):thumbs:

Not sure how much easier I can word it :cool:

MD
 

oldravendale

Western Thunderer
Gottit!

I'll hope to have a go at it (between building 4mm signals) at club on Thursday week. If my workshop is finished before I may even be able to attack them before that. :)

Thanks Mick.

B
 

ianlbsc

Western Thunderer
new-1.jpg This is the open treaded staircase part. If you hold down the top part with eg a steel rule, just on the top edge of it so as not to cover any of the half etch fold lines, and then lift the bottom edge of the fret upwards, and in line with the treads of the open stairs, the top half etch lines should all fold together on their inside and the bottom half etch lines, on the underside, should all fold together, and, as someone said, brass origami. You have an open tread stairway. Now solder or glue this to both the sides and thicken up the posts with the other parts.
I wish I could see it, far easier to do than explain?
Try it out by copying onto a thin piece of card first?
Cheers
Ian
 

Dog Star

Western Thunderer
After a bit of research I found this, it explains the construction far better than I could...
Generally with WT one gets at least two answers to any question....:rolleyes: :rolleyes: .

In this case Mickoo has provide a solution with quad roots and so, Brian, be prepared for at least a further couple of potential answers :thumbs: :thumbs: :thumbs: :thumbs: .


Disappointing that Mickoo has not offered a solution with includes the root of a negative number as that case would offer an imaginary answer - clearly the preferred approach.
 

Overseer

Western Thunderer
Just in case you haven't made the staircase yet this is the relevant part of the instructions from the Lochgorm Kits Highland Railway footbridge kit which uses the same design. If you buy the footbridge kit you will get four sets to practice on and end up with a very nice lattice footbridge.
step instructions.jpg
 

oldravendale

Western Thunderer
Hi Fraser.

That is really helpful. What a shame that the Churchward kit makes no effort to describe what to do. In fact, as I mentioned at the start of this thread, we were considering separating all the parts and making a jig!

We'll have a go at it next week and will report.

Best.

Brian
 

oldravendale

Western Thunderer
Hi Giles.

That's a great offer!! I'll have a word about the possibility at club but suspect that we'll use the Churchward steps as a learning exercise. If they don't work expect a continuation of this thread!

Those steps look exceptionally lovely. The thickness of the ironwork looks convincing too, although in fairness to the kit, once it's built and brass overlays applied it may be OK in it's own right. Nevertheless, once we've had an evening playing with it I'll put some photos up on WT.

Brian
 
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