Companion Cube - DIY

Опубликовано: 17 Февраль 2026
на канале: TheCraftMaiden
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I have played this game Portal a lot and after some years now it’s still my favorit puzzle game, and for some time I have had this itch to make my own companion cube, and now I finally have :D

A companion cube is born in this video, I hope you enjoy! :3


Things you’ll need:

Plasticard*: 1mm thick, I use Evergreen, I got it from a retailer that sells stuff for train modeling

Rods of different kind: 4x6,4mm, 2x2mm

Glue, Humbrol’s Precision Poly Cement

Model Filler, Humbrol


Paint:

Base primer matt white, The Army Painter

Administrativ Grey, Citadel

Skull White, Citadel

Fuchsia, Martha Stewart multi-surface satin Acrylic craft paint

Varnish: Anti Shine Matt, The Army Painter


Tools:

Scalpel

Scissors, that can cut plastic

Ruler

Circle template, If you don’t have any, use something that is roundabout the same diameter as: 22, 42 and 49mm

Iron ruler with angle bar, or something to make it easier to get a 90 degree angle

Pencil

Brushes

Nipper plier

Files, flat and D-curved

Finer sandpaper

Some sort of drill, I use a model drill ^^

Dust mask, this is going to be reeeally dusty!

*What is plasticard?

Plasticard is a hard plastic, it's industrial name is High Impact Polystyrene Sheet . UK modellers know it as plasticard, in the US it is commonly referred to as styrene sheet, plastcard or plastic card.

How do I cut plasticard?

For the very thin sheets, cut right through with a sharp craft knife or scalpel. Thinner sheets can also be cut with scissors. Otherwise the easiest way to cut styrene is by scoring it with a sharp modelling knife or scalpel, then bend it along the score, it should break cleanly. There will be a raised edge along the score line, this edge will clean up with a fine abrasive, file cards work well, or scrape it with the knife blade.

What glues do I use?

Polystyrene cement or any of the solvents or specialist glues that are used for the assembly of plastic kits. Don't forget to be in a well ventilated area, cause this make you dizzy otherwise..


For the rest of my tutorial, please check out my tumbler:

http://thecraftmaiden.tumblr.com/post...


http://valvesoftware.com/videopolicy....