concrete drawing 3 - foam template

now that concrete drawing 2 is complete it is time to move onto the last one concrete drawing 3. this one is the largest, at 3 m x 2.4 m. it is also extra complicated because a 4 legged metal structure will come up through the drawing, so we need to plan for the placement of that unit from the beginning.

 

we start by setting up our foam sheets that have been cut to size. we plan out the location of the metal structure and plan the cut lines and image in relation to each other.

to do this we use an old school overhead projector. this enables us to enlarge our drawings up to scale and try a few different ideas out before we commit to drawing on the real template.

then when we are happy we begin by drawing on the foam using a texter and the overhead image to guide us,

we stop and look and plan, and make sure the balance of the image is working

and we keep going colouring in the black area to separate it from the white, this will make it easier for us when we transfer it to the casting area. in the end the image will be black where the black is and a dark blue where the white is, so it will look quite different.

after a morning of planning and a couple hours drawing after lunch the pattern is ready. this pattern then gets cut out using our hot wire foam cutter like we did for the previous template.