Breathing Tubes for MK VI Helmets – Tutorial

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Breathing Tubes for MK VI Helmets – Tutorial


This tutorial shows how to add a distinctive green stuff breathing tube to MK VI helmets. (Also works for other helmets ;) )

Tools Used

  • Green Stuff

  • Roll Maker (Medium)

  • Super Glue

  • Colour Shaper

  • Hobby Knife

Step 1: Preparing the helmet
This is a classic MK VI "Corvus" helmet. Its long, distinctive beak is iconic — but in the way for this conversion. The goal is to make room for an integrated breathing tube — one of the traits of the Sanguine Directive 07-Null.


Step 2: Removing the beak
 Using a sharp hobby knife, the beak is cleanly removed. A flat, smooth cut is helpful to create a clean surface for later sculpting.



Step 3: Helmet fixed on torso
The modified helmet is already glued onto the torso. This provides more stability when attaching the tubing later and allows for precise planning of the tube´s position.


Step 4: Preparing Green Stuff
A sausage of Green Stuff is rolled out. The “Roll Maker (Medium)” is used here. A bit of water prevents it from sticking.


Step 5: Creating the ribbed texture
The sausage is rolled on the Roll Maker’s textured surface. Gentle pressure creates the ribbing pattern seen in tubes and cables. Keep the diameter consistent.


Step 6: Trimming one end
One end of the tube is cut flat. This provides a smooth contact area for mounting to the helmet.


Step 7: Result after shaping
The finished tube now has a uniform ribbed texture and a clean cut end. Let the moisture dry completely.


Step 8: Preparing super glue
Thin super glue works best here, as it bonds quickly and precisely. A tiny drop is enough.


Step 9: Attaching the tube
The rounded end of the tube is dipped into super glue and fixed carefully onto the helmet.


Step 10: First positioning
The tube is in place, but not yet blended into the torso. Pause to assess the tension in the bend. A gentler curve and a little more curing time before working could prevent the visible dents here.


Step 11: Cutting a Green Stuff rectangle
A small rectangle is cut from a thin layer of Green Stuff. It's not just a technical detail — it’s meant to cover and seal the junction between the tube and armor.


Step 12: Placing the rectangle
The rectangle is applied at the junction point between hose and helmet. It still looks separate — but with patience, it becomes a convincing integration.


Step 13: Pressing with Colour Shaper
Now the Colour Shaper tool is used — a soft silicone tip that blends and smooths Green Stuff without leaving tool marks.


Step 14: Trimming excess
Use a sharp hobby knife to remove excess material or overhangs — carefully, so you don’t damage your sculpt.


Step 15: Final smoothing
Wet tools are used for final smoothing, softening edges, and refining the transition.


The more time you invest here, the better it looks. Blend the Green Stuff into both helmet and tube until the transition feels seamless. 


Finished result



 The model is now ready for further work. The tubing looks functional yet improvised — perfect for the Sanguine Directive 07-Null or something like Death Guard.


- Frederic


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