I wanted to use a technique developed, as far as I know, by Don Railton where he used the blue builder’s Styrofoam manufactured by Dow to make his brickwork. His method was to tape some graph paper over some foam and then use a ruler aligned on the graph lines and an X-Acto knife to scribe the mortar lines into the foam.
I used a variation of an alternate method that Marc Reusser used. I drew a brick wall (Flemish Bond), printed it off and attached it to the foam using a low tack spray adhesive. Using a straight edge and a X-Acto knife I cut through the mortar lines. After removing the paper ‘brick shaped’ bits .. I went back over the lines, re-cutting, poking, squishing, pushing. This is one of those projects that you put beside the computer desk and work on it bit-by-bit .. otherwise you may go crazy (crazier?). I basically created a ‘brick sheet’ a little larger then the wall I needed and then cut the wall out and openings such as doors and windows.