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Water Stop at Westcott
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 Posted: Sun Apr 21st, 2013 03:49 pm
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Herb Kephart
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I use the pre-painted soffit material for my backdrop, and it will roll to a nice tight curve in the corners. I bought a roll painted white on one side, blue on the other. Installed it blue side out, the overall color was close to the sky color looking straight up, but too intense for down near the horizon where backdrops are, so had to repaint. Very satisfactory material for a backdrop.

Herb



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 Posted: Sun Apr 21st, 2013 03:56 pm
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BMWorks
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Added a close-up image of the small display I made back in 79. This was done with real dirt and I think some kind of coal like material as ballast. Ground foam of the day, other sifted forest material from the patch of trees in the subdivision. The blonde weeds were tuff's pulled from a old scrub brush (ha ha) we had in the basement sink. I think it was the dirt at the base that gives it the darker tone at ground level. Now we can go to the store and buy a sheet full of weeds that are just peel and stick.
Back to the future??
To make the new track work standout I want to go much lighter on the ballast.



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Brad

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 Posted: Sun Apr 21st, 2013 05:43 pm
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Dallas_M
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Beautiful construction! Are you going to cove the internal corners for a seamless backdrop?



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 Posted: Sun Apr 21st, 2013 07:00 pm
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BMWorks
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Herb,
What did you glue the aluminum it the back structure with?

Dallas,
Trying to get down to a 6in. radius in the vertical corners.



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Brad

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 Posted: Sun Apr 21st, 2013 11:38 pm
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Herb Kephart
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"Herb,
What did you glue the aluminum it the back structure with?"

I didn't. My "layout room" is a 40' over the road trailer, originally a reefer,so it is insulated. The interior is corrugated fiberglass panels, so I pop-riveted the aluminum to the panels top and bottom about every 6".
The bottom rivet is covered by scenery or buildings, the top, once painted, blends right in with the rest of the panel.
You wont have vertical joints. I have at the trailer ends, since the rolls of aluminum are 50' long. There, the two pieces are overlapped and riveted at about 9" intervals as I recall. Thought that I might have trouble with expansion and contraction--not of the backdrop, but of the room, since the trailer is almost ½" longer on a hot day than a cold one, but this is nicely taken up by the coved corners, which aren't backed up, but are rigid non the less.

Herb     



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 Posted: Mon Apr 29th, 2013 10:49 pm
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BMWorks
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Tried the aluminum sheet material from the blue store. Got it in and cut to fit without a band-aide. Now I am looking for some glue to bond the aluminum to the plywood structure. Have a look and if you have any suggestions, let them fly.
Tonight I am going to build the track test bed.




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Brad

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 Posted: Tue Apr 30th, 2013 12:31 am
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on2rails
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Looks good Brad. I really love your wood work. How thick is that aluminum sheet? You know, I was tempted to say that it is possible that Spray 77 from 3M might do it, but not sure how it will act. That or construction adhesive (real sticky stuff) might do it.



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Joey Ricard - West Virginia, USA

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 Posted: Tue Apr 30th, 2013 01:27 am
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BMWorks
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Joey,
That was one I had used before to glue the mat to my drafting table. If I find the can I will read what it can do. I have a foot of material left over and I will test out a few glues. A trip to old blue on the way home tomorrow will get me a few types of adhesive for a good variation test.
The material is around .020" thick. I will get a dial vernier out and measure it correctly, and give you a update.

Joey,
Measured out at .012" = 28 gage on the aluminum sheet chart.

Last edited on Wed May 1st, 2013 01:47 am by BMWorks



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Brad

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 Posted: Wed May 1st, 2013 01:29 am
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BMWorks
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Built the tracklaying test section. Drop a coat of paint on it, stain and glue ties down and I can start swinging the spike hammer.
I have three cross sections to test. Ties on foam, ties on Masonite, and ties on a cork / Masonite sandwich.
When I get to ballast, I will divide each length in two and this will give me six segments to try different technics.




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Brad

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 Posted: Wed May 1st, 2013 04:50 am
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on2rails
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This is a good way to see - not only what works which way and which is best, but what "you like" from the outcome of each. Interesting!



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Joey Ricard - West Virginia, USA

My Model Railroad Blog
https://www.facebook.com/sprucemodel

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Trackside Scenery - Backdrops & More
http://www.tracksidescenery.com

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