Building a modular river
If you've been following my articles about building terrain in previous articles on this site, you'll know that I've slowly been making terrain for my Wild West table for Malifaux. I've already built a church with a graveyard, an undertaker's on a hilltop, a minehead entrance, a watertower and in the last issue I've covered the building process of modular railroad tracks. This time, I decided to do a modular river to span the length of the standard Malifaux table.
Idea and planning
As always, planning is important, in some cases even vital part of the design process so it's always good to prepare yourself for the build. Good preparation not only saves money, but it also saves time. As I mentioned above, in this issue I'll be discussing how to build a modular river. Most of the rivers for tabletop look fake because people tend to make two banks with the river in the middle. This in itself is not bad, however, when placed on a flat tabletop, it will look more like a man made canal than a proper river. This had me thinking and I've come up with a simple solution. I decided to make the river modules about 30 x 30 cm (12'' x 12'') out of 2 cm thick HD styrofoam. This way, I'll have a part of the table at an elevated level with enough space to place some of the already built terrain. But most importantly the river won't look so much like a man made canal placed on top of the tabletop.
This in turn presented additional problems. Having such a river might provide some difficulties during gaming. How to get across to the other side, lots of free space with long lines of sight. Therefore, I decided that each of the three modules would have a river crossing. In order to make it as diverse as possible, I've decided to make one wooden pedestrian bridge, one railroad bridge (as I had some tracks left over) and one river crossing over shallows.
In fact, when I thought of the shallow crossing, it dawned on me that the overall setting on my table isn't what you normally see with lots of green colours and vegetation. It's almost desert like. That's the reason I decided to make the river almost dried up. (I will however, explain how to make the modules if you wish to have a full body of water inside your riverbed).
Materials and tools
After the rough sketch, I could make a definite list of materials and tools needed for this project. Those are as follows:
- roughly 10cm 2 mm balsa wood plank (they come in 10 x 100 cm planks)
- roughly 10cm of 5mm balsa wood plank (they also come in 10 x 100 cm planks)
- about half a sheet of 2cm thick HD styrofoam (50x100cm)
- about 30 x 30 cm of 5mm thick MDF
- superglue
- PVA glue
- 0,5 kg of DAS air drying clay
- gravel (four sizes)
- static grass / tufts
- AK Interactive Light and Dry Crackle Effect
- sanding paper (1 sheet)
- masking tape
- Gedeo Crystal Resin
- Pebeo Vitrail Colour – Greengold
- railroad tracks (toy)
The tools needed are:
- scalpel blade
- marker pen
- scissors
- modelling saw
- brushes – various sizes – for painting/washing and for drybrushing
- hot wire cutter
* Like in previous issues, I used my Proxxon table mounted circular saw, jigsaw on the MDF to cut the river base and cut the tracks to size.
Building the base
Having aquired all of the materials, using my scalpel blade, I first cut the three 30 x 30 cm modules from HD styrofoam. I then cut them in half with one side being about 20 cm wide and the other 10 cm. It was then time to draw the shape of the base of the riverbed on a piece of 5 mm thick MDF. If you have an irregularly shaped piece (like I had) it's wise to try different ways of placing your 10 x 30 cm riverbed modules to find the easiest way to cut the MDF. If you look carefull, you'll notice both red and green lines on my piece of MDF. In the end I cut the MDF along the green lines as it saved me a couple of passes with my jigsaw.
When both the HD styrofoam and MDF parts were cut, I made a mock assembly to find a suitable place to put my railroad tracks (as I had no straight lines, only curved). When I was satisfied with the layout, I cut the last piece of the track using my table mounted circular saw. If you don't own one, same can be done with either a scalpel blade or a modeller's saw.
When the railroad was cut, it was time to design the river banks. Placing the three pieces that make one module (small and large HD styrofoam part with MDF river bed in the middle), I drew the outline of the river bank using my marker pen. I made sure that the edges of the modules on both sides were exactly the same dimension. This would ensure that the modules can be placed in any formation. Following the drawn lines as closely as possible with my sclapel blade, I cut the embankments. It was now time to try to fit the MDF river bed to the remaining two parts. Again, using my marker pen, I marked 5mm from the bottom side of the styrofoam board and exactly 18 cm from the back of the larger and 6 cm from the smaller styrofoam piece. I cut along the lines and removed the excess material. This would ensure that my MDF riverbed would snuggly fit the HD styrofoam parts of each module.
Before assembly, I had to cut the surfaces of the embankments. I used my electric hot wire cutter. Hot wire cutter can come in several forms and power outputs. The one I have is the cheapest out there, powered by two AA batteries. How it works? The electricity from the batteries heats up the wire that then melts the styrofoam performing a perfect straight cut. However, as it heats the wire elongates so you should take into account that fact when fixing the wire to the cutter. It is quite cumbersome to operate in small, confined places which is the reason I used it before assembling the river modules.
When the embankments were formed, I turned the two HD styrofoam pieced over, generously poured some PVA glue and placed the MDF river bed in its place. Using my finger, I removed the excess PVA glue and with some 2 cm thick masking tape, I covered the joints between HD styrofoam and the MDF ensuring I had a really hard bond. Also, covering the joints with tape, enables you to procede with the build as it prevents the PVA glue from leaking. PVA glue normally takes up to 6 hours to fully cure.
With the tape in place, I turned over the tree modules and I built up some volume using DAS air drying clay. I made sure I had some clay on every edge of the module. When I add texture, this will ensure that the resin remain inside my module. I've already mentioned that I want the river to be half dried-up so this will actually help with the build as well as look good.
Texturing
At this point, I was nearing the end of the construction and all that had to be done before the painting was to add texture to the base. In order for the grooves that were cut with the hot wire cutter remain undamaged after undercoating (undercoat sprey burns styrofoam so it needs to be protected), I decided to cover those surfaces with a cote of pure PVA first. While it was drying, I took out all the gravel I was to use on this project: - chinchilla sand – smallest grain - basing grit in two sizes - chinchilla sand – largest grain
Once the PVA protection was dry, I smeared more wattered-down PVA on the vertical surfaces and sprinkled some smallest grain chinchilla sand. I then repeated the PVA smearing process on the roads and river shallows. Here, however, I first sprinkled over some largest grain gravel, next I sprinkeld some Basing Grit and to finish I poured over the smallest grain chinchilla sand. If you sprinkle gently and with care you can end up with nice variations in texture – for instance the middle of the dirt road usually has some larger stones as opposed to the sides of it. When the road was dry, I repeated the process with the rest of the base, sprinkling the two largest grains over the ground part. Inisde the riverbed, I carefully placed the largest gravel where the riverbed would be dry, and intentionally left the smaller grain where the water effect would be placed.
When I tackled the module with the railroad tracks, I first covered the route of the tracks with pure PVA glue to make sure the railorad tracks would stick. Then I sprinkled some roughest grain gravel along the route and in between the tracks.
You will notice that all of the modules have some parts of the modules without sand (with only PVA over them). This part of the modules would be covered with AK Interactive Light and Dry Crackle Effect paste to create the image of a dried up desert. But more about that a bit later on in this article.
Making the bridge structure
Before undercoating, there was only one more thing to do – the wooden pedestrian bridge. Using a 4,5 x 8,5 cm piece of 5mm thick balsa wood I made the body of the bridge. The dimensions I used are a bit odd, but it's only because the bridge was made to measure. I measured the width of the road and the span of the river and came up with those numbers. The 4,5 cm wide bridge would however accommodate every miniature base for Malifaux. When the body was cut, using a wooden stick, I made grooves across the bridge that would make up planking. Then, using 2 mm thick balsa wood, I made several supports for the bridge and glued them using super glue. Before gluing the bridge to the base, I undercoated the underside of the bridge as well as the river bank and river bed under the bridge to make my job easier later on.
Painting
First job when painting is to undecoat everything. This will help with the shading and the overall 3D effect of the entire terrain piece. Wanting all my terrain to fit one theme (and consequently one tabletop) it was only natural I use the same colours and colour scheme as on the earlier terrain. Therefore once again I used Pebeo Deco color range. I used Brown (29) for the basecoat and continued drybrushing with Ocre (51). Lighter shades were done with a 50:50 mixture of Ocre (51) and White (41). The final highlight was done with Antique White (69). The road and the river shallows were first basecoated with Brown (29) then heavily drybrushed with Ocre (51) and a 50:50 mixture of Ocre (51) and White (41). The last two highlights were Antique White (69) and pure White (41). This way, I had a visual difference between the normal groundwork and the worn out road.
The bridge and the wooden parts of the railorad tracks were painted by drybrushing first using a 50:50 mixture of Black (55) and Grey (54). Next layer was pure Grey (54) and the finishing highlight was Ash Brown (70). I was not quite satisfied with the result, so I added another highlight of pure White (41). The metal tracks were then painted pure metal (I used Citadel's Runefang Steel). When it was dry, as was the case in the last issue, I covered the metal bits with Model Mates' Rust Effect.
With the basic painting done, you'll have noticed the large patches without texture where pure PVA was placed in the texturing phase. As I promised before, I covered this parts using AK Interactive Light and Dry Crackle Effect. In some places I left only a thin layer, while in some I put it on generously and left it to dry. When it was dry, the effect of dried earth was created.
Vegetation
After the painting, it was time to add the vegetation to the base. Normaly, at this point, I'd add some trees (in the case of this Malifaux build, pine trees to be more exact). However, here I decided not to plant them as this way, the storage would be much, much simpler. And anyway, my intention is to make a lot of smaller terrain pieces (like small pine forest patches, some crates and other debris later on – maybe even in the next issue). With the trees out of the way, I added some static grass. I made a mixture using several green, brown, yellow and black shades of static grass and when I was satisfied with the end product, I glued it in random patches throughout the modules. One thing I made sure of is that I put static grass over any and all of the remaining holes where the black undercoat melted the HD styrofoam in order to hide the unintentional mistake. Once the static grass was in place, I applied several shades of different tufts. Again, as in the former articles, I used tufts made by a company called Gamer's Grass.
Working with resin
The water on the tabletop terrain can be simulated in many ways. Some are better and more realistic, while some are simpler but less believable. In my experience, I've come across six ways of reproducing water. In the end I'll focus on one method that in my opinion gives the most faithful reproduction of water.
First method is to texture the surface using PVA glue and sand (which is an especially good method for streams) and then paint it using long strokes of greenish brownish tint. After the paint dries coat it with a thick layer of marine varnish or some other form of gloss cote.
The most primitive method is using water itself. Leaking and not having depth in artificial light are the biggest drawbacks apart from evaporation and tendecy to grow life.
The third option is using glass. Make a riverbed like I explained earlier and put a glass surface over it. For extra effect you can tint it on the bottom. However, it is difficult to shape, so that it is not worth the effort.
The fourth method is using plexiglas. Same principles apply here as in the previous method. It is relatively easy to cut and is good for flat and calm water. I've seen it used in railroad models extensively and while both of these methods can look good on static displays such as railroad model tables and such, on smaller pieces of terrain (like used on tabletop) it is better to avoid these two methods.
The fifth method to recreate water is using marine varnish. Pouring in numerous layers means it takes a lot of time to finish. And still you will not get much depth in your river/body of water. It is therefore suitable for small wetlands or small ponds and puddles on various terrains. As with the first method, work in well-ventilated preferably open areas.
The final method, and also the most realistic, is the usage of resins. Are usually two-component mixtures (one is resin, the other a hardener). They are a really good way of creating water, both still and running. Good depth can be achieved and they can be tinted with special colors so that you can get the shade of water you need. A few tips for working with resin: - Protect your hands - wear gloves - Work in well ventilated areas - Have thinner handy to clean up if your pours outside the wanted space - Stir in plastic cups - When it is poured, drill the bottom of the glass so that Resin can slowly leak to avoid creating air bubbles
There are numerous versions of resin available at the market today but I’ll name a few products I use.
First, two part resin called Crystal Resin which is made by a company called Gedeo. It comes in two various sizes (300 ml and 750 ml), and can also be bought predyed. It’s main advantage over other products out there is that it is mixed in 2:1 ratio (resin : hardener), unlike most products who mix in 97:3 (or similar) ratio. Because of the easy way to calculate the ratio, this enables me to use quantities I need and does not force me to use the whole package at once. It has a drying time of 24 hours.
Second, Vallejo Still Water which is an awesome one part resin. It does not require mixing and can be dyed using Vallejo colours. It comes in a 200 ml bottle and is great for small ponds on your bases.
The third kind I use is Vallejo Water Effects (Extra Heavy Gel). It comes in various colours, but I use the transparent one. It is a white paste with the consistency similar to that of a tooth paste that dries clear. It is great for modeling ripple effects or waves on your water surfaces.
Back to the practical application. For this build, I chose Gedeo Crystal Resin. I first mixed a batch of resin and hardener (2:1 ratio as per instructions). Once I got a murky consistency, I poured in some Pebeo Vitrail Greengold Colour. Using a stirrer, I mixed it evenly throughout the resin. When I was satisfied with the colour, I carefully poured the resin inside the modules making sure I do not drip where I'm not supposed to. I left it to dry for 24 hours and my modular river was done!
How to make full-bodied river modules?
Simple. Follow the steps described earlier up to the point of pouring in the resin. Before I could add resin into the riverbed, you need to make dams to prevent the resin from leaking. Easiest way is to use strips of plastic foil gently glued to the sides of each module using superglue. Then use Vallejo Extra Heavy Gel to seal the joints between the modules and the plastic foils on the inside of the riverbed. Leave it to dry thoroughly, day or two if neccesary. Once dry, covered the plastic foil on the inside with some cooking oil to prevent it from sticking to the resin. Then place all the modules next to each other and pour in the coloured resin of your choice into each of the modules making sure that the level of the river in each module was the same. Leave it to dry for 24 hours, at least. Also, if you want to have a gradual transition of the colour in your river (pure resin on top with the darkest colour in the bottom), use several layers starting, obviously with the darkest colour allowing each layer to fully cure. Once the resin is dry, remove the plastic foil dams and there you have it – river done. To add some ripples and waves, you can use Vallejo Extra Heavy Gel when the resin is dry.
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Science behind Acrylic Paints
- Binders (eng. resin) – form a film – in our case probably pure acrylates, I suspect they are styrene acrylates.
- Fillers – in addition to adding volume to the paint, they also affect the viscosity, coverage and appearance of the dry film
- Pigments – the main division is into organic pigments and inorganic pigments. Inorganic ones are more covering but have less vivid shades, while organic ones are often quite poorly covering (yellow for example) but their shades are vivid and bright
Additives:
- Anti-foam
- Rheological modifiers – affect the behavior of wet paint on the substrate (e.g. spillage) and the behavior of the paint when a force is applied to it (brush, roller, spray, airbrush). Rheological modifiers also include thickeners that affect the viscosity of the paint.
- Dispersants – envelop pigment and filler particles and prevent their agglomeration during standing. Good dispersion of pigment and filler affects the coverage and uniform appearance of the dry film. There are a bunch more but I won't go into too much detail
- Solvent – in this case water.
Contrast paints and speed paints – high pigment content, but not so much that it causes high coverage. They are formulated to spread, not to stay where you put them. The result of spreading is that the paint collects in the recesses, where a thicker film of paint remains than on the protruding parts of the miniature. Where the film of paint is thicker (the recesses), the shade of the contrast paint is more pronounced, unlike on the protruding parts where the film is thinner, which is why the shade is then influenced by the color of the substrate.
Composition:
- Binders
- Pigments
- Additives – all listed above + surfactants that reduce the surface tension of the wet paint film, which is why it flows
- solvent
- I would say they do not contain fillers, or contain very, very little of them
Washes – similar in formulation and behavior to contrast agents, only they have a much lower proportion of pigments, certainly no fillers, a higher proportion of surfactants, lower viscosity, and probably less binders.
If we want to greatly dilute acrylic paint or contrast, it is better to use a product intended for this purpose from the manufacturer of that paint rather than water, because it contains all the necessary amount of binders and additives for that paint to retain its properties.
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U ovom članku, naša Dunja nam otkriva znanost iza akrilnih boja.
Akrilne boje – visoki udio pigmenta i dobra pokrivnost. Ako su dobro formulirane ostaju tamo gdje ih naneseš, ne ostavljaju „brush marks“ i suše se dovoljno sporo da stigneš napravit što želiš na minijaturi a opet dovoljno brzo.
Sastav:
- Veziva (eng. resin) – formiraju film – u našem slučaju vjerojatno čisti akrilati, sumnjam da su stiren akrilati.
- Punila – osim što dodaju volumen boji utječu i na viskoznost, pokrivnost i izgled suhog filma
- Pigmenti – glavna podjela je na organske pigmente i anorganske pigmente. Anorganski su više pokrivni ali manje živih nijansi, dok su organski često dosta loše pokrivni (žuti npr) ali zato su im nijanse žive i jarke
Aditivi:
- Protiv pjene
- Reološki modifikatori – utječu na ponašanje mokre boje na podlozi (npr razlijevanje) i na ponašanje boje dok na nju djeluje sila (kist, valjak, sprej, airbrush). Pod reološke modifikatore spadaju i ugušćivači koji utječu na viskozitet boje.
- Dispergatori – obavijaju čestice pigmenata i punila i sprječavaju aglomeraciju istih stajanjem. Dobra dispergiranost pigmenta i punila utječe na pokrivnost i ujednačen izgled suhog filma.
- Ima ih još hrpa ali neću toliko u detalje
- Otapalo – u ovom slučaju voda.
Kontrastice i speed paints – visoki udio pigmenta, ali ne toliki da uzrokuje visoku pokrivnost. Formulirane su da se razlijevaju, a ne da ostaju tamo gdje ih staviš. Posljedica razlijevanja je skupljanje boje u udubine gdje onda ostane deblji film boje nego na isturenim dijelovima minijature. Tamo gdje je film boje deblji (udubine) nijansa kontrastice izraženija, za razliku od isturenih dijelova na kojima je film tanji zbog čega na nijansu onda utječe boja podloge.
Sastav:
- Veziva
- Pigmenti
- Aditivi – svi nabrojani gore +
- surfakanti koji smanjuju površinsku napetost mokrog filma boje zbog čega i dolazi do razlijevanja
- otapalo
- rekla bih da ne sadrže punila, ili ih sadrže vrlo vrlo malo
Washevi – po principu formuliranja i ponašanju slični kontrasticama, samo imaju puno manji udio pigmenata, sigurno ne sadrže punila, veći udio surfakanata, manji viskozitet i vjerojatno manje veziva.
Ako želimo jako razrijediti akrilnu boju ili kontrasticu bolje je koristiti za to predviđen proizvod od proizvođača te boje nego vodu, jer sadrži svu potrebnu količinu veziva i aditiva kako bi ta boja zadržala svoja svojstva.
" ["created"]=> string(19) "2025-11-20 13:03:37" ["modified"]=> string(19) "2025-11-20 13:03:37" } ["Member"]=> array(10) { ["id"]=> string(2) "64" ["group_id"]=> string(1) "1" ["first_name"]=> string(9) "Krunoslav" ["last_name"]=> string(8) "Belinić" ["first_name_mask"]=> string(9) "krunoslav" ["last_name_mask"]=> string(7) "belinic" ["username"]=> string(5) "Kruno" ["password"]=> string(40) "eb3fda45fbec0258e90d809803b10491c548b22f" ["born"]=> string(19) "2015-01-18 09:19:00" ["created"]=> string(19) "2015-01-18 09:20:39" } } Krunoslav Belinić, 20th November 2025 - We attended: ModelMania 2025 Marko Paunović, 5th November 2025
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