I use air in a can, retired make up brushes from the wife, and bought one of those little micro-vaccums from Micro-Mark for about $25 and love it. I have a VERY large fleet of engines and cars that sit in display cabinets (not entirely dust proof), on book shelves, desk, etc. The wife usually cleans all that stuff anymore while I am away working out of town, and knows if she does occasionally break off a detail here or there (rare, but happens), she knows to keep the detail in a pill bottle on my work bench and tells me about it so I can glue it back on, no big deal.