Cleaning support material from a 3d print as big as this can take about 45-60 minutes. We tried something unusual at the suggestion of a shop manager, and it seemed to work. First, we spent 15 minutes removing the largest chunks of support material by hand (using some soft wooden tools and our fingers in gloves). This got us through about half the support. Then we placed the enclosure in project bag (something like a 5 liter zipper storage bag) with room temperature water, and let it sit. One hour later, we removed the enclosure to find all the support flaking off (if you leave too little support on the model during this step, we've heard the water can cause the actual model material to weaken). After removing the largest flaking chunks, we put the model into a standard water cleaning station and spent another 30-45 minutes removing the remaining 25% or so of the support.