Just to recap, I started my 'rubble' off by squeezing a lump of quick dry Pollyfilla into a discarded margarine lid...
Once dry I started to break up the lump into smaller 1/72-looking lumps - one tip is not to make your layer of Pollyfilla too thick, try to imagine the scale size of a wall or a floor, that's the thickness you are aiming for. I tried to grade my 'lumps' into big, medium and small...
Now, rubble ready I now have to prepare my backdrop to make it ready to place the rubble on. The two main features will be masonry spilling through gaps in the wall - a hole blown in the wall and the main doorway. I began by building up some of the 'spills' with some foam-board off-cuts...
Pollyfilla time again! I'm using this as a medium with which I can stick my rubble to the backdrop...
Then just sprinkle on the scale rubble, pressing it lightly into the still wet Pollyfilla. Just a little at first and then let the Pollyfilla dry, then add additional rubble on top of that using PVA glue, building the fallen masonry up in layers until you feel it looks realistic. I also added in some strips of plastic and wood to look like fallen interior planking...
Once I had the two main exterior mounds of masonry done I turned my attention to adding some rubble to the building facade itself. I applied some smaller pieces of the ground up plaster to the edges of the wall - sticking it in place with some Pollyfilla - and sprinkled some more dust and small lumps to window sills and lintels...
Nearly done. All that's left to do is to scatter some bits and pieces of my plaster rubble and wooden strips over the street. I've marked out where the tank tracks will be so I know where not to put any debris. I'll probably wash the street with a thin mixture of PVA and then sprinkle some of the smaller gritty pieces of plaster here and there and then glue in the larger lumps individually.
Well, that's that. Once all the rubble and detritus is on I'll spray on a grey base-coat before starting to paint the backdrop.
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