Agram Group Build Project #1 (part 2)
In this series of articles, we will follow our Goran, Kruno and Marko in the making of a diorama set in New York / Gotham in the mid-1980s. Diorama is being built as part of a new UMS "Agram" project called Agram Group Build, which was created after the trio discussed joint projects to be done on Wednesdays and how cool it would be to gather more people to work on something together… This gave birth to the idea of Group Builds... The idea is for everyone to do something on each of these three projects - the main rule (except that there are no rules) is not to mess with other people's work. That we all participate and make some kind of Frankenstein monster ...
KRUNO: After the obligatory introductory lemonade, I tried designing a window for a diorama. I tried to keep the proportions as in the pictures, and Marko forgot (aha!) to print the blueprints. That's why I used an unusual technique with a ruler on a mobile phone.. Satisfied with the result.
After designing, we threw ourselves into building… I assembled half of a Mini Art garbage container. I gave up mid way due to home chores… handed over Marko to Goran and went to self-register…
GORAN: Immediately after Kruno's departure, I started to remove the plastic gas bottles from the frame (sprue). In cooperation with Marko, I successfully completed this activity on one example, while at the same time he also successfully mastered the challenging assignment on a smaller copy - in my own case, I attribute this to running training, after which I was quite exhausted. All in all, a slow but promising start, I look forward to continuing the collaboration.
MARKO: What to say that my esteemed colleagues haven't said before. In parallel with Kruno, I assembled a bucket and a garbage container. With a little more success (aha, Kruno, back at ya!) Because I finished both the bucket and the container.
When Kruno fled and Goran came, we continued our work by assembling the gas cylinders. One bigger and one smaller.
Feel free to contact us here if you are interested! We are every Wednesday from 8 pm to 10 pm in KD ZZTK on Trg žrtava fašizma 14.
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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.
" ["content_hrv"]=> string(4306) "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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