QUOTE: Originally posted by jacon12 The other day, in another thread, I was asking about using hydrocal/plaster soaked paper towels over my 2 inch foam mountains etc. and someone, sorry I forget who, made a good case for not doing that. I forgot to mention at the time that I was using Woodland Scenic risers and inclines to elevate parts of my track. These sit, as most of you know, on the base and I can't think of any other way to 'cover' them, other than using something like hydrocal. Can you? So I'm guessing that I'll have to cover them this way and not do the same for other areas? Jarrell
QUOTE: Originally posted by selector Jarrell, what is the point to this grade? Where is it? Is it going up a hill? Is it merely a ramp up to another level, as yet undefined? As Jim suggests, the risers give you the basic elevation in a controlled manner, but what are they 'on'? If on a hillside, then you need to build the hill as pcarrell is indicating, and you COULD use the plaster cloth as Jim says. So, build up you layers, some flush up against the risers on either side, and cut them roughly, initially, in such a way as to suggest a rough hillside. The risers will be at the base of a cut that the civil engineers would have had built for the railbed. To blend the cut into the 'hillside', you could use the cloth as Jim suggests; wet it in strips, and immediately lay it over the risers, with quite a bit of overlap for support. (Wet the plaster, if you've not yet learned, is just a second or two in the water...no more. Hold it at two corners with your forefingers and thumbs, dip-two-three, lift out, and place.) You'll probably cover it with ballast later, so it won't look like plaster cloth, and what is visible will be painted over, ground foamed, and shrubs/bushes added....or rocks.
Ray Breyer
Modeling the NKP's Peoria Division, circa 1943
QUOTE: Originally posted by Jetrock What are you going to use underneath the paper towels? Simply draping the towels over the styrofoam won't look very good...crumpled up balls of newspaper or paper bags, taped in place, will provide some scenic support. Cork or foam roadbed will cover the tops of the risers, and ballast will cover the roadbed.
QUOTE: Originally posted by jhugart I'd recommend against using plaster because it is messy, and it probably takes more than you expect. There's a scenery book that came out recently, lots of color photos, showing the same Woodlands Scenics risers in use, followed by a covering of Ground Goop which acts as the scenery base. You might take a look at the book -- I'm sorry, I'm at work and don't have it with me.
QUOTE: Originally posted by TrevorG Jarrell, I have followed your layout development from day one with much interest. I can offer you one alternative which may work for you as I had a similar problem. To cover my risers and trackbed, I filled underneath with scaps of foam (which you don't seem to require) and sprayed a top coat of "Great Stuff" liquid foam. Many will poo-poo this option because it can be messy, smelly, ...essentially pick a word and add "LY" to it[(-D] Cover everything you don't want liquid foam on with masking tape. Then build the foam up from the bottom to the top. Keep in mind that it expands. When it's cured (usually 24 hours), you can cut and shape it using a knife, xacto blade, surform shaper et al. After I had shaped mine I then gave it a couple thin coats of ready mix drywall compound. When dry you can sand it if you like, but with some clever knife/trowel work you wont have to. I then finished my "rock cuts" with WS Earth pigment and ground foam. It looks great. Using this type of foam also give you a base to stick trees into that is firm but not hard. Best of luck on what you choose, Trevor [:)]
QUOTE: Originally posted by orsonroy QUOTE: Originally posted by jacon12 The other day, in another thread, I was asking about using hydrocal/plaster soaked paper towels over my 2 inch foam mountains etc. and someone, sorry I forget who, made a good case for not doing that. I forgot to mention at the time that I was using Woodland Scenic risers and inclines to elevate parts of my track. These sit, as most of you know, on the base and I can't think of any other way to 'cover' them, other than using something like hydrocal. Can you? So I'm guessing that I'll have to cover them this way and not do the same for other areas? Jarrell That was me, Jarrell: the Foam Militant. I'll admit that using plaster-soaked towelling draped over a support of some sort (the balled up newspaper trick) will be the easiest solution, but it's not the only one. As I posted on the other thread, the biggest drawbacks to plaster is in it's breakability and mess. There are quicker, cleaner and less messy foam alternatives. Firsto of all, based on your sketch above, you could add sheets of foam along the side of the risers, to hide the strange side profile of the risers. Once the sheets are in and the adhesive's set, fill in any gaps with Great Stuff "foam in a can". One or two cans should do your entire layout, and the stuff is carveable once it's set (overnight, usually. Be sure to SLOWLY add the GS; if sprayed fast, it produces large Swiss cheese-like holes in it's guts. Slowly spraying the GS will produce smaller holes. And don't forget that it expands to at least twice it's initial size!). Once the GS has dried, just start carving and shaping the foam. You'll have to fill in from the tops of the risers anyway (even if you use plaster) so why not start by filling them in with GS and giving it a shot? At worst, you can add plaster cloth over any failed foam attempts.
QUOTE: Originally posted by leighant I have used hard-shell hydrocal, paper towels. With your foam risers, I would recommend using bits and chunks and layers of foam to go up to the foam risers to give ROUGH shape of scenery. Then I would use CELL-U-CLAY brand paper mache, thin layer on top of foam to fill in cracks, holes, etc. Much lighter than plaster and cleans up easier. Probably a oittle less messy than plaster, but regardless, any messiness cleans up more easily. Not a perfect texture for rockwork but.... Paint surface of celluclay. If you have a bucket of "dirt colored" interior latex wall paint, would work fine if you don't have someone with acute latex allergy in your household. The little plastic bottles of craft paints the ladies' craft stores sell for 79 cents a bottle would also be okay-- if you have a good color sense, you can mix their cutesy "crafty" colors to make rugged earth colors. Then add ground foam to taste. Easy inexpensive, lightweight, fairly realistic not-too-messy scenery forms. (I'll see if I have some samplke pictures...)
QUOTE: Originally posted by leighant By the way, are you using anything directly UNDER your track other than the Woodland Scenics foam risers (with spaces in between them)...like ROADBED??? Are you going to have something to keep your ballast from falling down between the foam pieces when you ballast the track?
QUOTE: Originally posted by Trainnut1250 Jarrell, I think the stacked foam that gets cut with various knives and shaping tools sounds most viable to me. I've used Great Stuff for other things around the house, I dont think there is much advantage to it. I think that building up the contours of the ground the way you want them is most important here. You could do this with scrap foam, paper footballs or metal window screen material (I'm pretty old school). Once you have the contour any of the fillers described will work to smooth stuff out. I would stay away from stuff that doesn't dry at least semi water impervious (like dry wall mud). BTW: Your train room is waaaaay too clean. You might want to use plaster just to liven up the reparte between yourself and the missus....what do mean those are my footprints????....Just because they are white and coming from the train room...And there is the classic "Is that my good bowl?" By the way any bowl you choose, even if you go out and buy a new one she has never seen, will become the "good bowl". I have a fork that I have used to retrieve wood from my alcohol and ink jar for many years that is pitch black. Everytime my wife sees it she gets mad about the good fork that I ruined....
Marlon
See pictures of the Clinton-Golden Valley RR
QUOTE: Originally posted by lester2max jacon12 , if i'm viewing your math right, you have a 4.+% grade for your trains to climb. REMEMBER: an X % grade means you must have (either in feet or inches) a ratio of 100 to 1 or for every 1"rise you need 100"'s run for a 1% grade. This is an absulute & can not be cheated on. lester2max