Seb's SM tutorial – part 1 – Converting
I have very little experience with conversions, or sculpting, so take everything I write with a grain of salt, but after finding the @weird_witticism profile on instagram, I was inspired and decided to try my hands at a conversion.
Since I knew I would make plenty of mistakes, I bought two Warhammer Heroes Space Marines, since they are more affordable than most Warhammer miniatures. In addition I got myself a hand drill, a pack of brown stuff and some wire. And got started. These are the two miniatures I got:
I decided to use the one on the right, but to use the arm (with the grenade) of the left one, as I wanted to do a Cthulhu/Mindflayer possessed Space Marine, and by cutting off the grenade, the smoke looks kind of creepy. I cut the miniatures apart as needed:
Then made holes with the hand drill where I knew I wanted to have tentacles or the body parts of the Mindflayer protruding:
Cut of some wire and glued into the holes with super glue. This will create a stronger bond than if I only used brown stuff between the body parts:
I then had a skeleton and something to work from:
I cut of two equal parts of the two-part epoxy putty, and mixed them into a ball of brown stuff, that I then made thin and flat by using the handle of my hobby-knife as a rolling pin:
Dipped the knife blade in water so as to not stick to the brown stuff, and cut out a strip:
Bent some wire into the desired shape, and wrapped it in the brown stuff strip:
After gluing the tentacle into the hole, I took some more strips of brown stuff, and wrapped it around the area where the tentacle meets the shoulder pauldron and used a pointy metal tool to poke and prod it into a natural texture. I was pleased that I chose to sculpt organic material for my first project, realising that making natural texture requires much less technique than sculpting armor, guns or other inorganic material. Throughout the conversion, some random prodding and poking at the brown stuff while it was still soft seemed to do the trick. It took approximately a few hours for the brown stuff to harden.
To make the tentacles, I simply rolled a piece of brown stuff under my finger, until it became thin and sharp. Cut it off, and put it in its place. The brown stuff attaches easily to other brown stuff, so a little push was enough, no glue necessary.
The final result looks quite messy, but I’m hoping with paint, the organic parts of the Mindflayer will separate from the Space Marine’s armour, and look alright.
Latest articles
- Back to Basics Workshops in Galerija VN, a part of Libraries of Zagreb Krunoslav Belinić, 4th December 2025
- We attended: Monte San Savino 2025 Marko Paunović, 24th November 2025
-
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
- Necropolis Board part 1 Antoni Pastuović, 5th November 2025
Latest battle-reports
- Kill Team - Blooded vs. Vespid Stingwings 28th February 2025, GW - Warhammer 40.000, and Antoni Pastuović (Imperial Guard)
- 22nd April 2022, GW - Warhammer 40.000, Borna Pleše (Space Marines) and Kristijan Kliska (Tau Empire)
- 17th November 2021, GW - Warhammer 40.000, and Nino Marasović (Space Marines)