Make Your Own WW2 Gas Mask Box - Primary Resources How can I make a WW2 gas mask box with this diagram? Use this diagram of a net for a box to measure out and make your very own gas mask container. Print and stick the accompanying label onto your box to complete it! World War Two Anderson Shelter Diary Writing Template. FREE Resource! Europe during the Second World War - Areas of Influence5/5(7)Brand: Twinkl[PDF] Make your own Gas Mask Box - nothefort Bottom of Box Make your own Gas Mask Box How to Get Started Take a large sheet of stiff brown card and draw out the net shown above to the right size. Mark the middle of the bottom edge of the card and place the centre of Line A there. Continue to draw the rest of the net and carefully cut it out. Score along the remaining lines as they are folds.