HOW TO INSTALL A CURVED CORNER BACKGROUND
By Hal Estill, Cincinnati, Ohio
The first requirement is to review the walls/space to which you want to mount a background, to determine if it’s possible and what size background you need. I went on-line to Backdrop Warehouse, reviewed, and made copies of the sizing, pricing, and installation aid material they presented. For my O gauge layout the 36in. X 160 in. long background seemed to be appropriate. Since I would need two matching backgrounds A and B to get the 24-foot run I wanted, the total installed length, allowing for a 3 inch overlap of Sections A and B, would be 2(160-3)= 314inches long and 36 inches high. Looking at Figure 1
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The next consideration is the wall construction to which the background is to be mounted. My basement was basically concrete block with textured plaster ceiling. I had installed 1-inch by 2-inch furring strips to the walls and nailed the paneling to the furring strips. The radiused corner structure wall mounting screws would need to be screwed into these furring strips. This meant I would have to determine where the hidden furring strips were located in the corner areas by tapping on the paneled wall to find the non-hollow spots. Additionally, I could see that mounting the background over the pegboard sections and the vertical "plank" grooves in the paneling could be a potential problem if I pasted the background to the wall. I also wanted to move the background along with the movable train tabletops if I moved to another home. I finally concluded I had to design a radiused wood structure to fasten in each corner. I then needed to run new smooth paneling along the existing wall and the newly installed radiused corner structures for the full 24-foot length of the background.
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To determine how the 24-foot background would fit in, I made a sketch to a scale of 1in. =2ft, which for my train room with a size of 8ft. - 10in. by 20 ft., fits nicely on an 8 ½ inch by 11inch sheet. However, the sketches herein are not to scale and show only the basic "how-to’s". |
Now let’s calculate a sample problem. From the Backdrop Warehouse web site literature we learned that for an O gauge layout for a matched A and B (12 ft. each) set the total length allowing for the 3 inch overlap, would be 314 inches long as stated herein on the 1st paragraph, page 1. Let’s assume your train room is 14 foot long by 10 foot wide and that your train tabletop is 11 foot long and fills the train room like that shown in Sketch 1. Let’s further assume you want to put a 36-inch radius in each corner. Then A+B’=11ft.x 12in/ft=132in.,or A=132in.-B’. Then A=132-36=96in. In like manner C=10ft.-(B’+D’)= 120in-(36in.+36in.)= 48in. To determine E we use the equation E= Total background length - (A+B+C+D) where B and D are the radial lengths. Assuming r= radius=36in., then B or D =2II r/4=2 x 3.1416x36/4 = 56.55 in. and E= 314 - (A + B +C +D) E=314in.-(96in. + 56.55in. +48 in. + 56.55 in.) E= 314in.-(257.10 in.)= 56.9 in. = 4ft.-8 7/8 in. Now if A must equal E in length, our equation would be Total background length = 2A+B+C+D,or 314= 2A +(B +C +D) 314in.=2A+ (56.55in. + 48in. + 56.55 in.) 314in.= 2A+( 161.1 in.) and A=(314-161.1)/2 =76.45 in. = 6 ft.-4 3/8 in. If you wanted your background to go the full length of the table- top at E, then Total length = A +B +C +D +E Total background length = 96 in. + 56.55 in. + 48 in. +56.55 in. + 96 in. = 353.1 in. = 29 ft. – 5 3/32 in. For this length you would need three 10 foot backgrounds A + B + C to order from Backdrop Warehouse, unless you decide you want two or three different scenes for your background. Discuss your needs with Backdrop Warehouse. NOTE: The instructions from hereon assume you have experience with wood structures. If not get an experienced carpenter’s help. |
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On Table 1, B or D radial lengths for 4 different radii
help you size the radius you would need, keeping in mind that the radius you select should be larger than the radius of the track you may use in the corners.
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After installing a radial corner brace structure in each of the two end corners I added the 1/8-in. thick paneling to the existing paneled walls above the tabletop using panel nails. The paneling I used was a 4ft. X 8-ft. medium-density fiberboard from a national manufacturer in which the finished side was white and had random plank grooves. I purchased all of the lumber, paneling, panel nails, screws, and molding from a nationally known home improvement center. I took one of the horizontal radial braces with me to the home improvement center to see if the panels and molding were flexible enough to bend to a 30-in. radius before I made my purchase. Fortunately, I found both paneling and molding which were acceptable. Note also that the home improvement center cut all three 4 ft. x 8 ft. panels down to the 35 in. width by 8 ft. length I needed at no charge.
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In Figure 5 the right–hand end of the background
is installed.
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In Figure 7 the addition of the 1 ½ in. flexible stop molding I used (which comes prefinished as shown.), as it curves around the right hand radius corner. Figure 8 is a view of the left-hand radius corner with trains to demonstrate how well the background scale fits in with the O gauge train size. | ![]() |
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Figure 9 covers the entire 24-ft. of the background and greatly enhances the 3 dimensional appeal of the entire layout. In the 2-radius corners I plan to add mountains, trees, tunnels, and grasses. I have already cut in a small river. The mountains I add are to dovetail into the mountains in the background. I only hope my scenery work will look as real as the background.
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Can you write an Article If you would like to write an article on how you installed your BackDrop, we are interested. Good articles like this one will be included on our web site. Payment is typically around the cost of the backdrops used (limit $300) but may be more or less depending on the number of backdrops involved and the quality of the article.
Many well lighted photos are a must. We may submit good articles for review at major model railroad magazines. All photos and text are your property (except we have the right to use any sent to us on this web site) and arrangements for publication and payment are between you and the magazine. We will match the payment from the magazine up to $200 as long as our company is mentioned as the supplier of the backdrops. We can retouch and improve your photos for no additional charge.
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