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Hello Beernpolkaman, <br /> <br />There has been a couple of threads on this but I have made several large sacks of ground foam using both a hand meat grinder and a blender. The foam used is upholstery foam, and used and beaten up foam works a lot easier than new. The hand grinder will let you reduce it dry but the blender mix needs to be very wet to work. The blender gives a much more raggedy foam which I prefer but it takes about 3 times as long as you think will be enough. Yup, that means when you think you have it right and dry it out and colour it you won't be happy and you'll do the process over. Third time through it'll look just right. I use acrylics to colour mine and I mix it together in a large plastic bag. I also add several squirts of colour at the end of the mixing and let it dry with the random colours intermingled. It's not quick but you can make a lot and I go through this stuff by the kilo.
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