Category Archives: Structures

Wiring the movable access section part of the town for lighting


Using several kinds of lighting including woodland scenics Just Plug, strips of long reel leds

as well as some 12-16 volt incandescent Veissmann gas lamps.

Wires for town site

Wires for town site

Rigging bus bars and Just Plug light hub to a couple of mini plugs [added later) so the access section can be removed if needed with little trouble.

under the town section wiring in progress

under the town section wiring in progress

Adding details and lighting to highway underpass

Finishing the highway underpass leading out of town. I added led lighting and safety railings, as I have made the sidewalks higher above the road surface.

strip light and connector

self adhesive LED strip light and connector

Here the railings have been added and some random trash added. (might add more later)

almost ready to install

almost ready to install         

View from road under the bridge showing lights, railing and a poster on the wall

Under the bridge

Under the bridge

Will add a wall surface from sidewalk to the Road before installing the underpass



Cast Concrete arch bridge


Picking back up on a much earlier post, I finally started casting my concrete arch hydrocal bridge in two halves.


Wood & Sintra Mold

My waxed wood and sintra casting form


Wood & Sintra mold showing thickness

Pouring hydrocal with steel rod reinforcements


Pouring requires working quickly as Hydrocal sets fast

Leveling  to the face of the form


Level as close to flat as possible

Exterior pieces of the form being removed


Exterior parts remove easily

Casting removed from the mold and flipped over, with only the individual small arch pieces to be removed. These pieces have a 3 degree slope for ease of getting them out of the piece.     Still required a few knocks with a small hammer on each to remove!


Casting lightly sanded at this point

First half cast, but I’ll add some detailing with a file, forming casting joints and other details, then cast the other half and place them back to back, with a spacer which is typical for this type of bridge, really two identical arches, connected at the top.


Casting before final detailing


Pop-up access scenery sections


Having made 4 pop-up areas in my layout for access to track etc, I made foam plugs to sit on strips in the access holes to support the scenery, or town, or hill. The foam is light and  sturdy.

Layout of town on section

Layout of town on section

Here is the first section that will hold part of the town on my layout, in this case using a large sheet of styrene for the roads that lap over the joints of the plug to conceal it once settled into
the pop-up area.

Adding Styrene for roads and sidewalk

Adding Styrene for roads and sidewalk

Access area to be filled with section

Access area to be filled with section

I also put some large bolts that will be hidden inside removable buildings, that make it very easy to lift the section from the area.

Setting section in place

Setting section in place

Test fitting the soon to be town

Test fitting the soon to be town

A Test Casting

Shown here is a test casting, in Hydrocal, of a section of the concrete arch bridge. I wanted to test how the plaster would exit the mold. It was difficult, even in this small section, and even though I had built the mold with a 3 degree taper for the pieces forming the small enclosed arches. The outside pieces of the mold all are removable and that was fine, so I decided to make each of the individual small arch pieces separately removable, so one by one they can be eased out of the whole piece. Hopefully I will have a photo of a completed full casting sometime in the near future. I was pleased by the look of the piece and anxious to see a whole side intact!

Test section

Concrete Arch Bridge Test Sectional casting