Just past the east end of the town of Dos Manos, there is a wiring junction set into the ground between two tracks. Last fall I poured a mortar foundation around the junction box:
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For a long time I had wanted to put a building there, and finally decided that an old, concrete jailhouse would be just the ticket. It would be smaller, but similar in style and materials to the jails in Rhyolite, NV and Julian, CA. I could have built a form and cast the whole structure in real mortar, but I preferred to build it out of Sintra PVC board. I just had to come up with a way of texturing Sintra to look like cast concrete.
The Winter 2014 edition of the Modeler's Annual had a great article by Alexandre Duchamp on using artist's molding paste and other materials to model concrete and plaster surfaces. This inspired me to see if I could take it a step further, and replicate the look of cast concrete.
First I built the basic substructure out of 6mm thick Sintra PVC board:
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Then I built a simple, flat form out of cedar stripwood I had on hand. I sprayed the form several times with Pam, a non-stick cooking spray. I gave it time to soak in between each coat.
I mixed some acrylic molding paste with a bit of Liquitex "ceramic stucco" acrylic texturing gel, plus a bit of concrete-colored latex house paint. This mixture was spread thin over the form, and allowed to dry.
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When it was thoroughly dry I peeled it off the form. Next I mixed some molding paste and latex paint, and spread a thick layer onto one side of the building. I applied the dried, textured sheet, starting at one end and carefully pressing it into the wet layer. The trick is to prevent trapping any air under the textured sheet. Then I let this dry for two days, leaving it in the sun as much as possible.
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When I was sure it was dry, I trimmed off the excess material from around the edges of the building:
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This method worked pretty well. It wasn't quite as flat as I wanted, so for the remaining walls I did things a bit different. In the end though, this initial approach was what worked best.
On the remaining walls, I left the dried layer of molding paste attached to the form when I pressed it into the paste on the side of the building:
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Unfortunately I could not avoid trapping some air between the dried layer, and the wet paste. This caused wrinkles and depressions in the surface:
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I filled in the bad spots with more of the molding paste mixture, and scraped it smooth with a flat edge. When it had dried, I sanded it a little as needed. This turned out ok:
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I tried variations of this approach on the last two walls with similar results.
The roof would not need imprints of a wooden form, so I just used a spatula to spread the molding paste/stucco/paint mixture onto the surface of the roof. It took a couple layers, letting it dry in between. Then I sanded it a little to smooth out any excessively rough spots.
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There is a small window on one side of the building. Of course, it needs bars. So I built a frame of 6mm Sintra. Brass rods were glued into grooves cut into this frame:
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This was then glued onto the interior of the wall:
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A thin coat of the stucco/paint mixture was spread onto the edges of the window, and around the bars. When dry, excess material was scraped off the bars, and the rest was sanded smooth. The bars were chemically blackened, then painted. Finally, a fine brass screen was blackened and glued to the interior, to keep out insects:
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The building was weathered by first mixing a slightly darker version of the "concrete" colored paint, and dabbing on random blotches with a rough sponge. Some extra dark blotches were added along the bottom edge of the walls. When that had dried, I went over everything with a very, very thin wash of "dirty gray" -- a mix of black and brown acrylic paints. The finishing touch was dry-brushing on a mix of "concrete" latex paint and white acrylic paint. Here's how it turned out:
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The door was patterned after the riveted steel door of the Rhyolite jail, though not an exact replica. It was made from styrene strips glued to a block of 6mm Sintra PVC. I used .030" Tichy rivets set into drilled holes. Here's an in-progress shot:
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Here's the door with a coat of primer. After shooting this photo I realized I had forgotten the hinges -- these were added later:
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The door frame needed to be inset almost flush with the surface of the concrete. So I put the door in place and cut around the frame with an X-acto knife. Then I carefully scraped the textured molding paste off of the PVC substrate:
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Naturally, I needed a padlock for the door, so I made one out of brass. I simply bent a thin brass rod into a U shape. Then I wrapped a strip of .001" thick shim brass around it, and soldered it in place. Later, this was cut off at the base and filed smooth:
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Here's the finished front wall of the jail:
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A close up of the padlock. The door was painted a rusty brown using craft acrylics. Then I used a rough sponge to dab on random blotches of a cake decorating gel. This was over-sprayed with a thin coat of black paint. When washed in water, the decorating gel comes off, giving a peeled paint effect. I finished it with some washes of various rust colored craft acrylics:
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The sign was printed on self-adhesive vinyl and sprayed with Krylon UV resistant matte clear. I used craft acrylics to weather it, to look like rusty, enameled metal:
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Here are some shots of the building temporarily in place on the layout. I still need to build up the scenery around the base of the building, then add shrubs and other details. I had intended to wait until this was done, but I was so excited about this that I couldn't wait:
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Overall, I'm fairly pleased with how this turned out. The technique certainly has promise, though I'd still like to work out a way to get a flatter surface without any wrinkles or air bubbles.
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You are justly excited and pleased. As always your highly detailed "indoor" approach to an outdoor layout blows me away. -- Russ
Well that was a very informative and fun little "how to"
Thanks for sharing and posting!
-Marty
Very convincing! Is cake decorating gel designed to last outdoors? Is it edible? Be nice to find a weathering material that is also a snack.
Nice touch to add the screen-keeps out the flies that would come after the prisoners were roasted in the oven, I mean jail.
The decorating gel serves the same purpose as rubber cement, it's just easier to remove since it can be washed off with water.
Thanks, i hadn't heard of that stuff.
BTW, I think your sign should say "keep in".
Quote from: Chuck Doan on April 14, 2014, 04:08:30 PM
BTW, I think your sign should say "keep in".
My "back story" for this structure is that after the town outgrew it, the old jailhouse was acquired by the railroad and is currently used for storage of tools, etc.
Quote from: Ray Dunakin on April 13, 2014, 07:17:28 PM
... On the remaining walls, I left the dried layer of molding paste attached to the form when I pressed it into the paste on the side of the building:
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... very interesting approach, Ray ... I think I'll give it a try as an alternative to common formwork, when using plaster (or stucco) on my layout ...
Cheers
BTW: Your former jailhouse really looks the part ... 8)
Just superb, as always.
Gordon Birrell
http://www.flickr.com/photos/77318580@N00/
That jail house needs to have it's own sad country song a la "watching the train shaking up this concrete hole of hell".
Nice job, Ray!
Just lock em up and throw the key away ! Dirty Harry would make an excellent social worker !
Barney
Very interesting approach, Ray, and a convincing result. I really like the texture of the iron door. I've seen something like that at some very old iron parts which seem to have been painted with a very thin tar instead of color.
Volker
I put the finishing touches on the jail by blending it into the scenery. I started by wrapping masking tape around the building, then setting it in place on the foundation. Next I mixed up a batch of mortar, lightly tinted with concrete pigments, with some dirt and small rocks mixed in. I scooped this around the building, bringing it up over the top of the foundation. Next I sprinkled on some more dirt, rocks and some ballast, and wet that down so it would settle into the mortar better. Last of all, I poked a few holes into the surface, for installing plants. When it began to set but was not yet completely hard, I carefully removed the building:
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After giving it a day to dry out, I then glued in some plants and added a couple rusty, banged up steel drums. Here's how it all turned out:
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Thanks for following along!
.
Great job, Ray! -- Dallas
Ray, what to say more?
Is just a very interesting SBS for me, your method must be copied, so save me a place in your jail ...
The only issue is that cooking spray ... not sure if available here ... hehehe.
I have, for sure, resume all your topics.
Alex
Very nice job Ray. May I suggest that the roof needs some soot etc fallout on it and some streaks where it has run down the sides in the (rare) rain. I really like your setup, would like to come and play in it. ;D
Great job as usual Ray!!
I agree with Bill you need a little roof grime and wall streaking.
I don't know for sure but I think If you lock a prisoner up in there you are going to be in trouble with someone, no air conditioning or television.
Have you found the pilot step for the loco?
Later
Rick
Thanks!
Quote from: NORCALLOGGER on April 22, 2014, 03:28:29 PM
Have you found the pilot step for the loco?
LOL! Good eye. That step disappeared almost immediately after I got the loco and hasn't been seen since. One of these days I should try to find a replacement.